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  • Be liberal in what you accept... or not?

    - by Matthieu M.
    [Disclaimer: this question is subjective, but I would prefer getting answers backed by facts and/or reflexions] I think everyone knows about the Robustness Principle, usually summed up by Postel's Law: Be conservative in what you send; be liberal in what you accept. I would agree that for the design of a widespread communication protocol this may make sense (with the goal of allowing easy extension), however I have always thought that its application to HTML / CSS was a total failure, each browser implementing its own silent tweak detection / behavior, making it near impossible to obtain a consistent rendering across multiple browsers. I do notice though that there the RFC of the TCP protocol deems "Silent Failure" acceptable unless otherwise specified... which is an interesting behavior, to say the least. There are other examples of the application of this principle throughout the software trade that regularly pop up because they have bitten developpers, from the top off my head: Javascript semi-colon insertion C (silent) builtin conversions (which would not be so bad if it did not truncated...) and there are tools to help implement "smart" behavior: name matching phonetic algorithms (Double Metaphone) string distances algorithms (Levenshtein distance) However I find that this approach, while it may be helpful when dealing with non-technical users or to help users in the process of error recovery, has some drawbacks when applied to the design of library/classes interface: it is somewhat subjective whether the algorithm guesses "right", and thus it may go against the Principle of Least Astonishment it makes the implementation more difficult, thus more chances to introduce bugs (violation of YAGNI ?) it makes the behavior more susceptible to change, as any modification of the "guess" routine may break old programs, nearly excluding refactoring possibilities... from the start! And this is what led me to the following question: When designing an interface (library, class, message), do you lean toward the robustness principle or not ? I myself tend to be quite strict, using extensive input validation on my interfaces, and I was wondering if I was perhaps too strict.

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  • Tracking feature requests for small-scale components

    - by DXM
    I'm curious how other development teams (especially those that work in moderate to large development groups) track "future" features/wishlists for functionality for internally developed frameworks or components. I know the standard advice is that a development team should find one good tool for tracking bugs/features and use that for everything and I agree with that if the future requests are for the product itself. In my company we have an engineering department, which is broken up into multiple groups and within each there can be one to several agile teams. The bug tracking product we use has been "a leader since 1997" (their UI/usability seems to also be evaluated against that year even today) but my agile team or even group doesn't really control what is being used by the whole department. What we are looking to track is not necessarily product features but expansion/nice to have functionality for internal components that go into our product. So to name a few for example... framework/utility library on top of CppUnit which our developers share low-level IPC communications framework Common development SDK that myself and several other team leads started to help share some common code/tools at the department-wide level (this SDK is released as internal "product" to each of the groups). Is the standard practice to use the one bug tracking tool? Or would it make more sense to setup something more localized specifically for our needs and maintain it ourselves? It's also unclear how management will feel if developers start performing "IT" roles of maintaining software and servers. At the same time, right now, we use excel files, internal wiki and MS OneNote for this kind of stuff and that just doesn't feel right. (I'm afraid to ask for actual software recommendations, since that might make this question more localized or something. Also developers needs this way more than management, so it would be nice to find something either free or no more than the cost of a happy hour).

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  • Do I need a ssl certificate if just pointing my domain to Cloudfront?

    - by hashpipe
    I have a website running on a domain (e.g site.com). I have an additional domain(e.g sitecdn.com) which basically points to Amazon Cloudfront for delivery. Amazon Cloudfront in turn basically fetches the data from the main domain (site.com). I use this setup primarily to have multiple subdomains of my sitecdn.com to point to assets via the cdn. The main website has a ssl certificate, and I intend to put all assets served from the cdn as https links only. Something like <img src="https://img.sitecdn.com/image.jpg" /> I'm a little confused whether I need a ssl for my cdn domain. In cloudfront I can set the setting to allow both https and http traffic. Do I need a ssl certificate for this ? If yes, then where do I install the ssl certificate, since I don't have a server for sitecdn.com.

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  • Redirecting to a folder

    - by RN
    Apache2 Plesk 9.x I have a website www.example.com and my blog is on www.example.com/blog I have no content on www.example.com as of now So I want all requests for example.com to be redirected to www.example.com/blog How should I do that ? Is this something I can do in Apache? I am using the GoDaddy DNS server. Not sure if it matters- but I have multiple domains hosted n the same server. And I am using Plesk to manage my virtual hosts.

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  • bind tmux prefix to OS X cmd key (or any other binding)

    - by rubenfonseca
    Hi all. I'm used to iTerm2 (or Terminal.app for this case) on OS X. But I want to move to use tmux (or screen, but the problem is similar to both apps). So my idea is to have a single iTerm tab with a tmux session opened with multiple tabs. To do the transition I have a basic feature I need to configure on tmux: switch the the tab 'n' by using cmd + n (like Firefox, Chrome, iTerm2 itself, etc) However I can't find a way of mapping the cmd key on the mac keyboard. I first tried to implement cmd as a prefix key, with no success. I've tried setting set-option -g prefix M-a (hoping for Meta-a) set-option -g prefix ^a (hoping for ^ to work) but nothing works. Is this possible? I don't really need to bind the prefix to cmd, but I want to be able to change tmux tabs with cmd+n. Thank you

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  • CodePlex Daily Summary for Wednesday, July 30, 2014

    CodePlex Daily Summary for Wednesday, July 30, 2014Popular ReleasesGhostscript.NET: Ghostscript.NET v.1.1.9.: v.1.1.9. fixed problem with the PDF invisible layers (the optional content groups which will be left unmarked if processtrailerattrs is not executed). fixed text rasterization problem for some pdf's, it seems that the 'pdfopen begin' did not initialize everything required to render pdf properly so we replaced it with the 'runpdfopen' method which corrects everything (problem reported by "xatabhk"). changed GhostscriptRasterizer methods to support Stream insted of the MemoryStream. fixed...Recaptcha for .NET: Recaptcha for .NET v1.5: What's NewMinor bug fixes Support for legacy .NET framework 4.0 and ASP.NET MVC 4. Support for .NET Framework 4.5.1.Azure Storage Explorer: Azure Storage Explorer 6 Preview 1: Welcome to Azure Storage Explorer 6 Preview 1 This is the first release of the latest Azure Storage Explorer, code-named Phoenix. What's New?Here are some important things to know about version 6: Open Source Now being run as a full open source project. Full source code on CodePlex. Collaboration encouraged! Updated Code Base Brand-new code base (WPF/C#/.NET 4.5) Visual Studio 2013 solution (previously VS2010) Uses the Task Parallel Library (TPL) for asynchronous background operat...Wsus Package Publisher: release v1.3.1407.29: Updated WPP to recognize the very latest console version. Some files was missing into the latest release of WPP which lead to crash when trying to make a custom update. Add a workaround to avoid clipboard modification when double-clicking on a label when creating a custom update. Add the ability to publish detectoids. (This feature is still in a BETA phase. Packages relying on these detectoids to determine which computers need to be updated, may apply to all computers).VG-Ripper & PG-Ripper: PG-Ripper 1.4.32: changes NEW: Added Support for 'ImgMega.com' links NEW: Added Support for 'ImgCandy.net' links NEW: Added Support for 'ImgPit.com' links NEW: Added Support for 'Img.yt' links FIXED: 'Radikal.ru' links FIXED: 'ImageTeam.org' links FIXED: 'ImgSee.com' links FIXED: 'Img.yt' linksAsp.Net MVC-4,Entity Framework and JQGrid Demo with Todo List WebApplication: Asp.Net MVC-4,Entity Framework and JQGrid Demo: Asp.Net MVC-4,Entity Framework and JQGrid Demo with simple Todo List WebApplication, Overview TodoList is a simple web application to create, store and modify Todo tasks to be maintained by the users, which comprises of following fields to the user (Task Name, Task Description, Severity, Target Date, Task Status). TodoList web application is created using MVC - 4 architecture, code-first Entity Framework (ORM) and Jqgrid for displaying the data.Waterfox: Waterfox 31.0 Portable: New features in Waterfox 31.0: Added support for Unicode 7.0 Experimental support for WebCL New features in Firefox 31.0:New Add the search field to the new tab page Support of Prefer:Safe http header for parental control mozilla::pkix as default certificate verifier Block malware from downloaded files Block malware from downloaded files audio/video .ogg and .pdf files handled by Firefox if no application specified Changed Removal of the CAPS infrastructure for specifying site-sp...SuperSocket, an extensible socket server framework: SuperSocket 1.6.3: The changes below are included in this release: fixed an exception when collect a server's status but it has been stopped fixed a bug that can cause an exception in case of sending data when the connection dropped already fixed the log4net missing issue for a QuickStart project fixed a warning in a QuickStart projectYnote Classic: Ynote Classic 2.8.5 Beta: Several Changes - Multiple Carets and Multiple Selections - Improved Startup Time - Improved Syntax Highlighting - Search Improvements - Shell Command - Improved StabilityTEBookConverter: 1.2: Fixed: Could not start convertion in some cases Fixed: Progress show during convertion was truncated Fixed: Stopping convertion didn't reset program titleSharePoint 2010 & 2013 Google Maps V3 WebPart: SPGoogleMap webpart - SharePoint 2013 - July 2014: Google API key support added. The webpart does not need it but if you have one you can use it.QuieNet: Version 2.0: Replaced autoplay prevention mechanism: instead of replacing the player itself, only the function that starts the player is replaced. This only works for video players for now, and live streams are handled as before.XamlImageConverter: Xaml Image Converter 3.11: Improvements: - ASP.NET 64bit support for html2pdf. - Attribute to suppress parallel execution. - Ghostscript rendering. - No need for a snapshot for a imagemap, you can use original svg image.Automatic Parallel Computing: APC SDK 2.1: Features: integration with Amazon DynamoDB. Includes: Investment Club Benchmark Investor Ranking BenchmarkCatchException (Manage Exception): CatchMe Exception Version 1.0: Code SourceDnnFoundation Skin for DnnCMS: DnnC DnnFoundation Skin: First release of the DnnC DnnFoundation SkinQND Operations Manager SNMP Monitoring: QND.SNMP.Library version 1.0.0.103: fixed bug #1815FlMML customized: FlMML customized c.s.30938: ????????LFO、?????LFO??????。 ???·Y·????LFO、??????????????????。 ???LFO????????????????????。CS-Script Source: Release v3.8.4: CSScript.Evaluator is migrated to Mono v3.3.0 Added aggregating //css_ignore_ns from the imported scripts cs-script.7z - CS-Script Suite (binaries, documentation, samples) cs-script.ExtensionPack.7z - CS-Script Extension Pack (additional binaries and samples) cs-scriptDocs.7z - CS-Script DocumentationDotSpatial: DotSpatial 1.7: DotSpatial.Full - includes all DotSpatial libraries, extensions and DemoMap application DotSpatial.Core - includes only DotSpatial core libraries Entire list of changes see in the issue tracker. Main changes: Improved common stability, optimized memory and speed when loading and rendering shapefiles, fixed some memory leaks in rasters and shape layers. Simplified plugin infrastructure. Now there are predefined implementations for all required components (IStatusControl, IDockManager, IHead...New ProjectsAdmin QuikView for Dynamics CRM 2013: Admin QuickView is a gives you a quick hierarchical snapshot of all active Business Units, Teams, Security Roles and Users in your Dynamics CRM Organization.All bots: Windows Phone app to chat with bots from http://www.pandorabots.com/Calculator Proj: Calculator with power hexadecimal binary option and more... Computational Network Toolkit (CNTK): Computational networks (CNs) generalize models that can be described as a series of computational steps such as DNN, CNN, RNN, LSTM, and maximum entropy models.DelegateExpressionizer: Library is intended to decompile delegate code at runtime and build and appropriate expression tree.Hystaspes: Logistics Management System: Logistics Management SystemKinect Experiments: This repository contains various code samples, proof-of-concepts and utilities for Kinect for Windows (v1.8 and v2)ppcs: Placement Project Version 1.0.0.0Reusable MVC Partial View with JQuery Datatables: Reusable jQuery DataTables integrated with in a Partial View of MVC 4.0 is a reusable control/view written entirely in C# and JQuery, my aim was to create a MVCShared Code Project Template for Visual Studio 2013 Update 2: This Project contains the source code for a Shared Project template for VS 2013 which extends the shareing of code to all Project types besides universal apps. Text word search: This project is a sample for searching words in a notepad or a word file through wpf platform. Trace And Watch: Trace And Watch is a Pintool developed to assist in finding 32-bit integer errors.Vtron Automatic tester screen parameters: VTRONWalli: Walli is an open source SalesForce integrated developer environment(IDE) application written in .NET.Windows Kirlian WiFi App: Illustrates the radio field generated by WiFiWOMPS - What's new On My PLEX Server: Purpose of this project is to send an user a weekly or daily email of all new content add to their Plex library.

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  • Automatically updating routing table on server

    - by bramp
    I have a LAN with three routers on it, one connected to the Internet, one VPN router connected to a few remote sites, and a final route connected to a private network (using BGP to get prefix advertisements). On the same LAN I have multiple Linux servers which needs access to the networks behind each router. I have achieved this by configuring static routes on the server, pointing the different network prefixes to the correct router. This has worked well, but every time we connect to a new remote VPN, we have to change all the servers to be aware that the network is now accessible via the VPN, and not via the default Internet route. What I want is a way to automatically update the routes on all of the servers, when the route is added to a routers. Now, I could install Quagga or something similar on all the servers to receive router advertisements, but that seems like overkill. So my question is what is the easiest/simpliest way to update the routing tables on the server automatically, and what protocol is best suited for this purpose. thanks

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  • Delphi Client-Server Application using Firebird 2.5 error

    - by Japie Bosman
    I have got a lengthy question to ask. First of all Im still very new when it comes to Delphi programming and my experience has beem mostly developing small single user database applications using ADO and an Access database. I need to take the transition now to a client server application and this is where the problem starts. I decided to use Firebird 2.5 embeded as my database, as it is open source, and it is can be used with the interbase components in Delphi and that multiple clients can access the database simultanously. So I followed the interbase tutorial in Delphi. I managed to connect the client to the server and see the data in the example (While both are running on my pc), but when i tried to move the client to another pc, keeping the server on mine and running it to see if I can connect to the server it gave me the following error. Exception EIdSocketError in module clientDemo.exe at 0029DCAC. Socket Error # 10061 Connection refused. I understand that this might be because the host is defined as localhost in the client. But here is my first question. In the TSQLConncetion you can set die hostname under Driver-Hostname. The thing I want to know is how do you do this at run time, as I cannot get the property when I try and make an edit box to allow the user to enter the value and then set it via code like for example: SQLConncetion1.Driver.Hostname := edtHost.text; The thing is there is not such property to set, so how do you set the hostname at run time? Im using Delphi XE2 There is still a lot of questions to come especially when it comes to deployment, but I will take this piece by piece and I appreciate the advice.

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  • Why does my DNS change (and break) at regular intervals?

    - by Peter Kelly
    I have a laptop running Windows 7. Up until recently, everything was fine. We have multiple devices in my house connecting to the one access point with no problems. No issues with ISP. Now my Windows 7 PC DNS settings change every minute or so. Before the problem occurs if I do an ipconfig /all I have two DNS settings (primary/secondary) and everything is fine. After a short period of time this change to a sole DNS, 10.0.0.1. Webpages no longer resolve. If I do an ipconfig /renew, this fixes the problem. I have tried uninstalling various programs I thought might be related but the problem persists. Any ideas of potential causes?

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  • Class hierarchy problem in this social network model

    - by Gerenuk
    I'm trying to design a class system for a social network data model - basically a link/object system. Now I have roughly the following structure (simplified and only relevant methods shown) class Data: "used to handle the data with mongodb" "can link, unlink data and also return other linked data" "is basically a proxy object that only stores _id and accesses mongodb on requests" "it looks like {_id: ..., _out: [id1, id2,...], _inc: [id3, id4, ...]}" def get_node(self, id) "create a new Data object from the underlying mongodb" "each data object can potentially create a reference object to new mongo data" "this is needed when the data returns the linked objects" class Node: """ this class proxies linking calls to .data it includes additional network logic operations whereas Data only contains a basic database solution """ def __init__(self, data): "the infrastructure realization is stored as composition by an included object data" "Node bascially proxies most calls to the infrastructure object data" def get_node(self, data): "creates a new object of class Object or Link depending on data" class Object(Node): "can have multiple connections to Link" class Link(Node): "has one 'in' and one 'out' connection to an Object" This system is working, however maybe wouldn't work outside Python. Note that after reading links Now I have two questions here: 1) I want to infrastructure of the data storage to be replacable. Earlier I had Data as a superclass of Node so that it provided the neccessary calls. But (without dirty Python tricks) you cannot replace the superclass dynamically. Is using composition therefore recommended? The drawback is that I have to proxy most calls (link, unlink etc). Any thoughts? 2) The class Node contains the common method .get_node which is used to built new Object or Link instances after reading out the data. Some attribute of data decided whether the object which is only stored by id should be instantiated as an Object or Link class. The problem here is that Node needs to know about Object and Link in advance, which seems dodgy. Do you see a different solution? Both Object and Link need to instantiate one of all possible types depending on what the find in their linked data. Are there any other ideas how to implement a flexible Object/Link structure where the underlying database storage is isolated?

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  • Save password in WCF adapter binding file

    - by Edmund Zhao
    Binding file for WCF Adapter doesn't save the password no matter it is generated by "Add Generated Items..." wizard in Visual Studio or "Export Bindings..." in administration console. It is by design dut to the consideration of security, but it is very annoying especially when you import bindings which contain multiple WCF send ports. The way to aviod retyping password everytime after an import is to edit the binding file before import. Here is what needs to be done. 1. Find the following string:     &lt;Password vt="1" /&gt; "&lt;" means "<", "&gt;" means ">", "vt" means "Variable Type", variable type 1 is "NULL", so the above string can be translated to "<Password/>" 2. Replace it with:     &lt;Password vt="8"&gt;MyPassword&lt;/Password&gt;    variable type 8 is "string", the above string can be transalted to "<Password>MyPassword</Password>"   Binding file uses a lot of character entity references for XML character encoding purpose. For a list of the special charactor entiy references, you can check from here. ...Edmund Zhao

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  • Web-based (intranet / non-hosted) timesheet / project tracking tools

    - by warren
    I realize some similar questions have been asked along these lines before, but from reading-through them today, it appears they don't match my use case. I am looking for a web-based, non-hosted time and project tracking tool. I've downloaded Collabtive and Achievo so far, but am looking for other suggestions, too. My list of requirements: runs on standard LAMP stack non-hosted (ie, there is an option to download and run it on a local server) not a desktop/single-user application easy-to-use - my audience is a mix of technical and non-technical folks easy to maintain - when time for upgrading comes, I'd really like to not have to rebuild the app (a la ./configure ; make ; make install) needs to support multiple users free-form project additions: we don't have a central project management authority (users should be able to add whatever they're working on, not merely from a drop-down) Does anyone here have experience with such tools? It doesn't have to be free.. but free is always nice :)

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  • Crime Scene Investigation: SQL Server

    - by Rodney Landrum
    “The packages are running slower in Prod than they are in Dev” My week began with this simple declaration from one of our lead BI developers, quickly followed by an emailed spreadsheet demonstrating that, over 5 executions, an extensive ETL process was running average 630 seconds faster on Dev than on Prod. The situation needed some scientific investigation to determine why the same code, the same data, the same schema would yield consistently slower results on a more powerful server. Prod had yet to be officially christened with a “Go Live” date so I had the time, and having recently been binge watching CSI: New York, I also had the inclination. An inspection of the two systems, Prod and Dev, revealed the first surprise: although Prod was indeed a “bigger” system, with double the amount of RAM of Dev, the latter actually had twice as many processor cores. On neither system did I see much sign of resources being heavily taxed, while the ETL process was running. Without any real supporting evidence, I jumped to a conclusion that my years of performance tuning should have helped me avoid, and that was that the hardware differences explained the better performance on Dev. We spent time setting up a Test system, similarly scoped to Prod except with 4 times the cores, and ported everything across. The results of our careful benchmarks left us truly bemused; the ETL process on the new server was slower than on both other systems. We burned more time tweaking server configurations, monitoring IO and network latency, several times believing we’d uncovered the smoking gun, until the results of subsequent test runs pitched us back into confusion. Finally, I decided, enough was enough. Hadn’t I learned very early in my DBA career that almost all bottlenecks were caused by code and database design, not hardware? It was time to get back to basics. With over 100 SSIS packages and hundreds of queries, each handling specific tasks such as file loads, bulk inserts, transforms, logging, and so on, the task seemed formidable. And yet, after barely an hour spent with Profiler, Extended Events, and wait statistics DMVs, I had a lead in the shape of a query that joined three tables, containing millions of rows, returned 3279 results, but performed 239K logical reads. As soon as I looked at the execution plans for the query in Dev and Test I saw the culprit, an implicit conversion warning on a join predicate field that was numeric in one table and a varchar(50) in another! I turned this information over to the BI developers who quickly resolved the data type mismatches and found and fixed “several” others as well. After the schema changes the same query with the same databases ran in under 1 second on all systems and reduced the logical reads down to fewer than 300. The analysis also revealed that on Dev, the ETL task was pulling data across a LAN, whereas Prod and Test were connected across slower WAN, in large part explaining why the same process ran slower on the latter two systems. Loading the data locally on Prod delivered a further 20% gain in performance. As we progress through our DBA careers we learn valuable lessons. Sometimes, with a project deadline looming and pressure mounting, we choose to forget them. I was close to giving into the temptation to throw more hardware at the problem. I’m pleased at least that I resisted, though I still kick myself for not looking at the code on day one. It can seem a daunting prospect to return to the fundamentals of the code so close to roll out, but with the right tools, and surprisingly little time, you can collect the evidence that reveals the true problem. It is a lesson I trust I will remember for my next 20 years as a DBA, if I’m ever again tempted to bypass the evidence.

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  • Models with more than one mesh in JMonkeyEngine

    - by Andrea Tucci
    I’m a new jmonkey engine developer and I’m beginning to import models. I tried to import simple models and no problems appeared, but when I export some obj models having more than one mesh in the OgreXML format, Blender saves multiple meshes with their own materials (e.g. one mesh for face, another for body etc). Can I export all the meshes in one? I’ve tried to join all the meshes to a major one with blender (face joins body), but when I export the model and then create the Spatial in jme(loading the path of the “merged” mesh), all the meshes that are joined to the major doesn’t have their materials! I give a more clear example: I have an .obj model with 3 meshes and I export it. I have : mesh1.mesh.xml , mesh2.mesh.xml , mesh3.mesh.xml and their materials mesh1.material, mesh2.material mesh3.material so I import the folder in Assets/Models/Test and now I have to create something like: Spatial head = assetManager.loadModel( [path] ); Spatial face = assetManager.loadModel( [path] ) one for each mesh and than attach them to a common node. I think there is a way to merge those mesh maintaining their materials! What do you think? Thanks

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  • SOA Starting Point: Methods for Service Identification and Definition

    As more and more companies start to incorporate a Service Oriented Architectural design approach into their existing enterprise systems, it creates the need for a standardized integration technology. One common technology used by companies is an Enterprise Service Bus (ESB). An ESB, as defined by Progress Software, connects and mediates all communications and interactions between services. In essence an ESB is a form of middleware that allows services to communicate with one another regardless of framework, environment, or location. With the emergence of ESB, a new emphasis is now being placed on approaches that can be used to determine what Web services should be built. In addition, what order should these services be built? In May 2011, SOA Magazine published an article that identified 10 common methods for identifying and defining services. SOA’s Ten Common Methods for Service Identification and Definition: Business Process Decomposition Business Functions Business Entity Objects Ownership and Responsibility Goal-Driven Component-Based Existing Supply (Bottom-Up) Front-Office Application Usage Analysis Infrastructure Non-Functional Requirements  Each of these methods provides various pros and cons in regards to their use within the design process. I personally feel that during a design process, multiple methodologies should be used in order to accurately define a design for a system or enterprise system. Personally, I like to create a custom cocktail derived from combining these methodologies in order to ensure that my design fits with the project’s and business’s needs while still following development standards and guidelines. Of these ten methods, I am particularly fond of Business Process Decomposition, Business Functions, Goal-Driven, Component-Based, and routinely use them in my designs.  Works Cited Hubbers, J.-W., Ligthart, A., & Terlouw , L. (2007, 12 10). Ten Ways to Identify Services. Retrieved from SOA Magazine: http://www.soamag.com/I13/1207-1.php Progress.com. (2011, 10 30). ESB ARCHITECTURE AND LIFECYCLE DEFINITION. Retrieved from Progress.com: http://web.progress.com/en/esb-architecture-lifecycle-definition.html

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  • Searchable tags in Excel?

    - by Dustin Sanders
    I'm building a database of spiders, organizing them by name, country, and region within that country. The problem is that many of the spiders exist in multiple countries and regions within that country. I want to be able to sort spiders by either country, or region, without having to enter a duplicate entry for every country or region that spider exists in. For example: Say Spider A exists in the USA and Australia. In the USA it lives in the South and North West. In Australia it lives in New South Wales. Is there a way I can make one entry for this spider, but tag it so it will show up when I search for spiders in USASouth or AustraliaNew South Wales?

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  • Redirect with .htacess - URL with regex to URL

    - by nicorellius
    I have a temporary need to redirect some installer files on my web site. The redirects that are working now look something like this: Redirect 301 /installer_1.0.0.zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_1.0.1.zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_1.0.2.zip http://www.example.com/download/installer_1.0.3.zip I would like to use a regex instead of having multiple lines for each version I need to redirect. I have tried these options with no success: Redirect 301 /installer_(.*).zip http://www.example.com/download/installer_1.0.3.zip Redirect 301 /installer_([0-9+]\.[0-9+]\.[0-9+]).zip http://www.example.com/download/installer_1.0.3.zip Should these work or am I doing something wrong? Thanks.

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  • Production Access Denied! Who caused this rule anyways?

    - by Matt Watson
    One of the biggest challenges for most developers is getting access to production servers. In smaller dev teams of less than about 5 people everyone usually has access. Then you hire developer #6, he messes something up in production... and now nobody has access. That is how it always starts in small dev teams. I think just about every rule of life there is gets created this way. One person messes it up for the rest of us. Rules are then put in place to try and prevent it from happening again.Breaking the rules is in our nature. In this example it is for good cause and a necessity to support our applications and troubleshoot problems as they arise. So how do developers typically break the rules? Some create their own method to collect log files off servers so they can see them. Expensive log management programs can collect log files, but log files alone are not enough. Centralizing where important errors are logged to is common. Some lucky developers are given production server access by the IT operations team out of necessity. Wait. That's not fair to all developers and knowingly breaks the company rule!  When customers complain or the system is down, the rules go out the window. Commonly lead developers get production access because they are ultimately responsible for supporting the application and may be the only person who knows how to fix it. The problem with only giving lead developers production access is it doesn't scale from a support standpoint. Those key employees become the go to people to help solve application problems, but they also become a bottleneck. They end up spending up to half of their time every day helping resolve application defects, performance problems, or whatever the fire of the day is. This actually the last thing you want your lead developers doing. They should be working on something more strategic like major enhancements to the product. Having production access can actually be a curse if you are the guy stuck hunting down log files all day. Application defects are good tasks for junior developers. They can usually handle figuring out simple application problems. But nothing is worse than being a junior developer who can't figure out those problems and the back log of them grows and grows. Some of them require production server access to verify a deployment was done correctly, verify config settings, view log files, or maybe just restart an application. Since the junior developers don't have access, they end up bugging the developers who do have access or they track down a system admin to help. It can take hours or days to see server information that would take seconds or minutes if they had access of their own. It is very frustrating to the developer trying to solve the problem, the system admin being forced to help, and most importantly your customers who are not happy about the situation. This process is terribly inefficient. Production database access is also important for solving application problems, but presents a lot of risk if developers are given access. They could see data they shouldn't.  They could write queries on accident to update data, delete data, or merely select every record from every table and bring your database to its knees. Since most of the application we create are data driven, it can be very difficult to track down application bugs without access to the production databases.Besides it being against the rule, why don't all developers have access? Most of the time it comes down to security, change of control, lack of training, and other valid reasons. Developers have been known to tinker with different settings to try and solve a problem and in the process forget what they changed and made the problem worse. So it is a double edge sword. Don't give them access and fixing bugs is more difficult, or give them access and risk having more bugs or major outages being created!Matt WatsonFounder, CEOStackifyAgile Support for Agile Developers

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  • How do you manage Labeled and All-Mail unread mails in Thunderbird with a GMail IMAP accounnt?

    - by Edward Beach
    I use Thunderbird with gmail via imap and do so with multiple accounts. On the gmail side I have filters that will automatically assign labels to incoming mail and archive it moving it out of the inbox. On the Thunderbird side it will see the new mail appear in the corresponding folder and the all mail folder -- that's fine but my problem is that they're both marked as unread. Since I have many accounts I use the unread mail view in Thunderbird's folder panel and what I see is both folders highlighted as unread. When I read the message in one folder the other only get marked as read I click on it and Thunderbird does another imap transaction. Is there a configuration that will recognize the same mail in two different folders automatically?

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  • MVC and individual elements of the model under a common base class

    - by Stewart
    Admittedly my experience of using the MVC pattern is limited. It might be argued that I don't really separate the V from the C, though I keep the M separate from the VC to the extent I can manage. I'm considering the scenario in which the application's model includes a number of elements that have a common base class. For example, enemy characters in a video game, or shape types in a vector graphics app. The view wants to render these elements. Of course, the different subclasses call for different rendering. The problem is that the elements are part of the model. Rendering them is conceptually part of the view. But how they are to be rendered depends on parameters of both: Attributes and state of the element are parameters of the model User settings are parameters of the view - and to support multiple platforms and/or view modes, different views may be used What's your preferred way of dealing with this? Put the rendering code in the model classes, passing in any view parameters? Put the rendering code in the view, using a switch or similar to select the right rendering for the model element type? Have some intermediate classes as a model-view interface, of which the model will create objects on demand and the view will then render them? Something else?

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  • Does shutdown idle VMs improve the performance?

    - by Samselvaprabu
    Often our team members are coming to me with a compliant that their VMs are slow. Our team members suggested to shutdown some of the VMs temporarily and try to access the VM. But most cases that would not help. Assume that i have assigned 4 GB for and 2 CPUs for my VM. So ideally it should not face performance issue. As our ESXi 4.1 server has multiple VM in the same server (we have overcommited memory and CPU). Does shut down other VM really helps to improve performance or not? [Note : We are using ESXi 4.1 and our hardware is R710 server. We have more number of VMs in single server so we have overcommited memory.]

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  • Managing BES Software Configurations

    - by DaveJohnston
    Hi, I am having problems with OTA deployment of a bespoke application that we have written. I have read loads of threads elsewhere and I have got mixed help, but for my particular case none of it has really helped. So I thought I would explain my exact situation and try and get some help here. I am running BES version 4.1.5 (Bundle 79) for Microsoft Exchange. The application we have written is split into 5 modules, which we control, and another 4 modules which are 3rd party libraries that we require. So for our modules the version numbers are regularly changing but for the others they are pretty much always going to remain the same. We have an alx file set up that identifies all of the files required and in fact I am able to create a software configuration and deploy the application with no problems. What I am trying to do however is maintain multiple versions of our application on the BES and be able to select which version I want to deploy to each user. I have tried this a number of ways (as I said I have read lots of other threads with solutions to this problem) but each seems to come with its own problem. First of all I tried just creating different configurations for each version of the application, but because they each had the same application ID the BES informed me that I couldn't do this. I read somewhere that the solution was to create a second shared folder (e.g. \Program Files\Common Files\RIM) and add the apploader stuff and the new version of the app to this folder. I could then create a second software configuration that would have the same application ID. The result of this seemed promising to start with. When I changed the config that was assigned to a user the new version was pushed out fine. But afterwards the BES reported that the device state was invalid, which meant I couldn't push anything else until I reactivated the device. I guess this is because the first config was never set to disallowed so the old version wasn't removed and the device essentially reported that it had multiple versions of the same application installed. The next suggestion I got was to change the application ID for each version, e.g. to include the version number. This meant that each version of the application could be included in a single configuration and I could set one to disallowed and the other to required. Initially this worked and the first version was deployed. But when I switched (i.e. the old version became disallowed and the new version required) the BES reported upgrade required and removed the old version. The device restarts and the old version is gone but the new version is not pushed out. I checked the BES and it still said Upgrade Required. I checked the log files and found: [40000] (11/12 09:50:27.397):{0xEB8} {[email protected], PIN=1234, UserId=2}SCS::PollDBQueueNewRequests - Queuing POLL_FOR_MISSING_APPS request [40000] (11/12 09:50:28.241):{0xE9C} RequestHandler::PollForMissingApps: Starting Poll For Missing Apps. [40304] (11/12 09:50:28.241):{0xE90} WorkerThreadPool:: ThreadProc(): Thread released with empty queue [40000] (11/12 09:50:28.241):{0xE9C} SCS::RemoveAppDeliveryRequests - No App Delivery Requests purged for User id 2 [30000] (11/12 09:50:28.960):{0xE9C} Discard duplicate module group "name" on device [30000] (11/12 09:50:28.960):{0xE9C} Discard duplicate module group "name" on device [40000] (11/12 09:50:29.163):{0xE9C} RequestHandler::PollForMissingApps: Completed Poll For Missing Apps, elapsed time 0.922 seconds. (You will notice I have removed actual names and email addresses etc for privacy reasons. But one question: where does the name of the module group come from? In my case it is close to the application ID but doesn't include the version number that I added at the end in order to get it to work. Is that information embedded in a COD file or something??) So it is reporting a duplicate module group on the device? What does this mean? I checked the device properties (as reported on the BES) and it confirms that the modules with the old version numbers are still present on the device. So the application has been removed but not the modules?? I checked the device and the modules are gone, so it is just the BES reporting that they are still there?? I checked the database and it has the modules in questions in the SyncDeviceMgmt table. If I delete these from the DB the BES changes to report Install Required, and low and behold the new version of the app is pushed out. So at the end of all that, my question is: does anyone have any other suggestions of how to handle upgrading our bespoke application OTA from the BES? Or can anyone point out something I am doing wrong in what I described above that might solve the problems I am having? I guess the question is why does the database maintain that the modules are on the device after they are removed? Thanks for any help you can provide.

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  • Heading to GTC 2010

    - by Daniel Moth
    Next week the GPU Technology Conference (GTC) 2010 takes place in San Jose, CA and I am lucky enough to be attending the entire week. It has been an extremely long time (in fact, I can't remember the last time) where I am registered as an attendee at a conference (full pass/access) without being a speaker *and* without having any booth duty! Having said that, we (our team at Microsoft) will be running GPU debugging UX studies throughout the entire week (similar to what I had previously advertised). If you are attending GTC 2010 and you are interested, look for the related flyer in your conference bag. The conference is an excellent opportunity to connect in-person with various individuals that I have only met virtually. From an educational perspective there is a very long and interesting session list, with multiple concurrent slots, making it very hard to choose between them, but I have managed to create my (packed) schedule. I am most looking forward to sessions on the programming languages and tools, both from Microsoft and MS partners. For full conference details, visit the GTC 2010 official page. Comments about this post welcome at the original blog.

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  • Future Of F# At Jazoon 2011

    - by Alois Kraus
    I was at the Jazoon 2011 in Zurich (Switzerland). It was a really cool event and it had many top notch speaker not only from the Microsoft universe. One of the most interesting talks was from Don Syme with the title: F# Today/F# Tomorrow. He did show how to use F# scripting to browse through open databases/, OData Web Services, Sharepoint, …interactively. It looked really easy with the help of F# Type Providers which is the next big language feature in a future F# version. The object returned by a Type Provider is used to access the data like in usual strongly typed object model. No guessing how the property of an object is called. Intellisense will show it just as you expect. There exists a range of Type Providers for various data sources where the schema of the stored data can somehow be dynamically extracted. Lets use e.g. a free database it would be then let data = DbProvider(http://.....); data the object which contains all data from e.g. a chemical database. It has an elements collection which contains an element which has the properties: Name, AtomicMass, Picture, …. You can browse the object returned by the Type Provider with full Intellisense because the returned object is strongly typed which makes this happen. The same can be achieved of course with code generators that use an input the schema of the input data (OData Web Service, database, Sharepoint, JSON serialized data, …) and spit out the necessary strongly typed objects as an assembly. This does work but has the downside that if the schema of your data source is huge you will quickly run against a wall with traditional code generators since the generated “deserialization” assembly could easily become several hundred MB. *** The following part contains guessing how this exactly work by asking Don two questions **** Q: Can I use Type Providers within C#? D: No. Q: F# is after all a library. I can reference the F# assemblies and use the contained Type Providers? D: F# does annotate the generated types in a special way at runtime which is not a static type that C# could use. The F# type providers seem to use a hybrid approach. At compilation time the Type Provider is instantiated with the url of your input data. The obtained schema information is used by the compiler to generate static types as usual but only for a small subset (the top level classes up to certain nesting level would make sense to me). To make this work you need to access the actual data source at compile time which could be a problem if you want to keep the actual url in a config file. Ok so this explains why it does work at all. But in the demo we did see full intellisense support down to the deepest object level. It looks like if you navigate deeper into the object hierarchy the type provider is instantiated in the background and attach to a true static type the properties determined at run time while you were typing. So this type is not really static at all. It is static if you define as a static type that its properties shows up in intellisense. But since this type information is determined while you are typing and it is not used to generate a true static type and you cannot use these “intellistatic” types from C#. Nonetheless this is a very cool language feature. With the plotting libraries you can generate expressive charts from any datasource within seconds to get quickly an overview of any structured data storage. My favorite programming language C# will not get such features in the near future there is hope. If you restrict yourself to OData sources you can use LINQPad to query any OData enabled data source with LINQ with ease. There you can query Stackoverflow with The output is also nicely rendered which makes it a very good tool to explore OData sources today.

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  • How to redirect from one web directory to another with Apache

    - by RN
    Apache2 Plesk 9.x I have a website www.example.com and my blog is on www.example.com/blog I have no content on www.example.com as of now So I want all requests for example.com to be redirected to www.example.com/blog How should I do that ? Is this something I can do in Apache? I am using the GoDaddy DNS server. Not sure if it matters- but I have multiple domains hosted n the same server. And I am using Plesk to manage my virtual hosts.

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