Search Results

Search found 16622 results on 665 pages for 'known issues'.

Page 315/665 | < Previous Page | 311 312 313 314 315 316 317 318 319 320 321 322  | Next Page >

• Telerik Extensions for ASP.NET MVC Q1 2010 is out!

  Today we shipped the Q1 2010 release out of the door. Go download the open source or if you are a licensed customer download it from your client.net account.   What is new on the MVC front is: No longer in BETA New components TreeView, NumericTextBox components, Calendar, DatePicker New features Grid grouping, Grid editing, Grid localization Using jQuery 1.4.2 Lots of bug fixes   The rest is mentioned in the release notes.   Breaking changes from Q1 2010 Futures!!! There is one breaking change since the Q1 2010 Futures release. The Toolbar method of the GridBuilder has been renamed to ToolBar: <%= Html.Telerik().Grid(Model) //.Toolbar(commands => commands.Insert()) <- Old .ToolBar(commands => commands.Insert()) // <- New%> For a complete list of changed API of the grid check the changes and backward compatibility help topic.   By the way if you still havent cast your vote for a new product or feature do it now! We will soon start development for Q2 2010.Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• SSH asks for password

  - by user1435470

  I have already : Installed the server Generated the pub/pri keys with -P "" Copied the id_rsa.pub to authorized_keys ssh localhost answered "yes", copied to known_hosts tried ssh localhost still asks for password Output: hduser@hduser1-desktop:~$ ssh -v localhost OpenSSH_5.3p1 Debian-3ubuntu7, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to localhost [127.0.0.1] port 22. debug1: Connection established. debug1: identity file /home/hduser/.ssh/identity type -1 debug1: identity file /home/hduser/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/hduser/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3p1 Debian- 3ubuntu7 debug1: match: OpenSSH_5.3p1 Debian-3ubuntu7 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu7 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'localhost' is known and matches the RSA host key. debug1: Found key in /home/hduser/.ssh/known_hosts:3 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering public key: /home/hduser/.ssh/id_rsa debug1: Authentications that can continue: publickey,password debug1: Trying private key: /home/hduser/.ssh/identity debug1: Trying private key: /home/hduser/.ssh/id_dsa debug1: Next authentication method: password Any suggestions ? Cheers

  Read the article

• Google Chrome with strange behavior

  - by user72274

  I'm former Chromium-browser user, but after not upgrading the PPA for 2 months, I switched to Google Chrome browser yesterday. Everything is okay, except some strange behavior on some pages and crashing after loading "chrome://" configuration pages. The best known website with strange behavior is youtube, there is a picture what I see: When I open user menu in top right corner, it crashes that way and even after closing the menu, some parts of menu stay display. You may say it's Youtube problem, no, I have this problem at least on three other websites, here it is on Imgur: The problem isn't for the whole side, sometimes it happens from the middle of the screen. The interesting part is that it happens everytime in the same distance from the right border. When I check the DOM elements with the Developer tool, the overlay which shows element's position is rendered how it should be. What is more, if there is anchor after the crashed area, it works after clicking on it. Selecting text in crashed page is impossible. I hope there is enough information to give me an advice, thanks in advance. :) EDIT: Here is what the browser posted in "chrome://gpu-internals/": Graphics Feature Status Canvas: Software only, hardware acceleration unavailable Compositing: Hardware accelerated 3D CSS: Hardware accelerated CSS Animation: Software animated. WebGL: Hardware accelerated WebGL multisampling: Hardware accelerated Problems Detected Accelerated CSS animation has been disabled at the command line. Accelerated 2d canvas is unstable in Linux at the moment. Ubuntu 12.04 | Gnome-shell 3.4.1 | ATI Radeon 4550 | Screen resolution 1024*768 | Chrome version 20.0.1132.57 (Official Build 145807)

  Read the article

• Are there any good examples of open source C# projects with a large number of refactorings?

  - by Arjen Kruithof

  I'm doing research into software evolution and C#/.NET, specifically on identifying refactorings from changesets, so I'm looking for a suitable (XP-like) project that may serve as a test subject for extracting refactorings from version control history. Which open source C# projects have undergone large (number of) refactorings? Criteria A suitable project has its change history publicly available, has compilable code at most commits and at least several refactorings applied in the past. It does not have to be well-known, and the code quality or number of bugs is irrelevant. Preferably the code is in a Git or SVN repository. The result of this research will be a tool that automatically creates informative, concise comments for a changeset. This should improve on the common development practice of just not leaving any comments at all. EDIT: As Peter argues, ideally all commit comments would be teleological (goal-oriented). Practically, if a comment is made at all it is often descriptive, merely a summary of the changes. Sadly we're a long way from automatically inferring developer intentions!

  Read the article

• I have discovered a fundamental truth about TV shows and plots

  - by Steve Loethen

  For years, we have all known (okay, maybe I give people too much credit) that there is a very small finite number of plots.  I propose a project.  Let’s use the blogosphere to catalog those plotlines, and then find and document the episodes of shows that use them, including the show title. As evidence, how many shows have used the following plot line:? The standard “evil twin” plotline?  Once relegated to soaps, it has show up in crime shows, with the twist of DNA.  Step one, concentrate one this one.  Tell me about every show you recall that has used this plot.  I will collect and document the shows on my website (www.loethen.net) and we can build a database of the plots. Step two, what other common themes should I offer up?  How about the bigamist plot line?  The “bad guy was dead” plot line (revenge from the dead"?  The “vast government conspiracy” plotline? Let the games begin….

  Read the article

• CMS and Databases vs. DIY

  - by hozza

  I have been programming for many years now, primarily in PHP and the like and would consider myself an intermediate programmer. Some of my online projects have now gone global and very widely used, i am now in deep thought about scalability etc. All of my systems so far are written in PHP, no known database structure such as MySQL etc. Instead our databases use an 'operating system style' method of storing information, files and folders if you will. We also do not use any outside/third-party software or CMS, so far this has work out extremely well. Most people, when they hear about the way we do things, criticize and say that is an idiotic idea but normally after seeing our systems in more dept are converted to our way of doing things. Is it really that bad to not use a standard databasing systems and only using the one (slightly heavier than others) language of PHP? How well on the face of it will this kind of setup scale? N.B. Our systems include things such as account and user management, documentation development and task/project managing.

  Read the article

• Cloning from a given point in the snapshot tree

  - by Fat Bloke

  Although we have just released VirtualBox 4.3, this quick blog entry is about a longer standing ability of VirtualBox when it comes to Snapshots and Cloning, and was prompted by a question posed internally, here in Oracle: "Is there a way I can create a new VM from a point in my snapshot tree?". Here's the scenario: Let's say you have your favourite work VM which is Oracle Linux based and as you installed different packages, such as database, middleware, and the apps, you took snapshots at each point like this: But you then need to create a new VM for some other testing or to share with a colleague who will be using the same Linux and Database layers but may want to reconfigure the Middleware tier, and may want to install his own Apps. All you have to do is right click on the snapshot that you're happy with and clone: Give the VM that you are about to create a name, and if you plan to use it on the same host machine as the original VM, it's a good idea to "Reinitialize the MAC address" so there's no clash on the same network: Now choose the Clone type. If you plan to use this new VM on the same host as the original, you can use Linked Cloning else choose Full.  At this point you now have a choice about what to do about your snapshot tree. In our example, we're happy with the Linux and Database layers, but we may want to allow our colleague to change the upper tiers, with the option of reverting back to our known-good state, so we'll retain the snapshot data in the new VM from this point on: The cloning process then chugs along and may take a while if you chose a Full Clone: Finally, the newly cloned VM is ready with the subset of the Snapshot tree that we wanted to retain: Pretty powerful, and very useful.  Cheers, -FB 

  Read the article

• Skin Object Tokens for DotNetNuke 5 - 8 Videos

  In this tutorial we demonstrate how to use Skin Object Tokens in DotNetNuke v5 and above. Skin Object tokens are a new skinning method introduced in DotNetNuke 5 for adding tokens into a DotNetNuke skin. A Skin Object Token is a web user control, it covers skin elements such as the logo, menu, search, login links, date, copyright, languages, links, banners, privacy, terms of use etc. This new Object token method has been introduced into DotNetNuke with the idea of making it simpler to add a skin object into a DotNetNuke skin. The videos contain: Video 1 - Introduction to HTML Object Token Skinning Video 2 - Basic Styling of a Skin and Creating Multiple Content Panes Video 3 - Styling, Control Panel, Login and Register Skin Object Tokens Video 4 - Packaging, Installing, Testing and Viewing the ASCX Version of the Skin Video 5 - Viewing the Attributes for Skin Object Tokens, Logo Token, Search Token Video 6 - Breadcrumb Token, Text Token and Localization, Links Token Video 7 - More Skin Tokens and Token Replacement Video 8 - Demonstration of the Object Tokens and Bug Fixing Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• Most common parts of a SELECT SQL query?

  - by jnrbsn

  I'm writing a function that generates a SELECT SQL query. (I'm not looking for a tool that already does this.) My function currently takes the following arguments which correspond to different parts of the SELECT query (the base table name is already known): where order fields joins group limit All of these arguments will be optional so that the function generates something like this by default: SELECT * FROM `table_name` I want to order the arguments so that the most often used parts of a SELECT query are first. That way the average call to the function will use as few of the arguments as possible rather than passing a null value or something like that to skip an argument. For example, if someone wanted to use the 1st and 3rd arguments but not the rest, they might have to pass a null value as the 2nd argument in order to skip it. So, for general purpose use, how should I order the arguments? Edit: To be more precise, out of the query parts I listed above, what is the order from most used to least used? Also, I'm not looking for solutions that allow me to not have to specify the order. Edit #2: The "fields" argument will default to "*" (i.e all fields/columns).

  Read the article

• Java warnings on kubuntu 11.10

  - by Geo Papas

  Hello i am getting warnings after i have installed java on kubuntu 11.10. The java programs run but i always get 4 warnings: $ java Warning: no leading - on line 1 of `/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/amd64/jvm.cfg' Warning: missing VM type on line 1 of `/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/amd64/jvm.cfg' Warning: no leading - on line 1 of `/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/amd64/jvm.cfg' Warning: missing VM type on line 1 of `/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/amd64/jvm.cfg' What am i missing? Thanks in advance! the content of the file /usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/amd64/jvm.cfg is: /usr/lib/jvm/java-6-sun # # %W% %E% # # Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. # ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. # # List of JVMs that can be used as an option to java, javac, etc. # Order is important -- first in this list is the default JVM. # NOTE that this both this file and its format are UNSUPPORTED and # WILL GO AWAY in a future release. # # You may also select a JVM in an arbitrary location with the # "-XXaltjvm=<jvm_dir>" option, but that too is unsupported # and may not be available in a future release. # -server KNOWN -client IGNORE -hotspot ERROR -classic WARN -native ERROR -green ERROR

  Read the article

• OpenXML error “file is corrupt and cannot be opened.”

  - by nmgomes

  From time to time I ear some people saying their new web application supports data export to Excel format. So far so good … but they don’t tell the all story … in fact almost all the times what is happening is they are exporting data to a Comma-Separated file or simply exporting GridView rendered HTML to an xls file. Ok … it works but it’s not something I would be proud of. So … yesterday I decided to take a look at the Office Open XML File Formats Specification (Microsoft Office 2007+ format) based on well-known technologies: ZIP and XML. I start by installing Open XML SDK 2.0 for Microsoft Office and playing with some samples. Then I decided to try it on a more complex web application and the “file is corrupt and cannot be opened.” message start happening. Google show us that many people suffer from the same and it seems there are many reasons that can trigger this message. Some are related to the process itself, others with encodings or even styling. Well, none solved my problem and I had to dig … well not that much, I simply change the output file extension to zip and extract the zip content. Then I did the same to the output file from my first sample, compare both zip contents with SourceGear DiffMerge and found that my problem was Culture related. Yes, my complex application sets the Thread.CurrentThread.CurrentCulture  to a non-English culture. For sample purposes I was simply using the ToString method to convert numbers and dates to a string representation but forgot that XML is culture invariant and thus using a decimal separator other than “.” will result in a deserialization problem. I solve the “file is corrupt and cannot be opened.” by using Convert.ToString(object, CultureInfo.InvariantCulture) method instead of the ToString method. Hope this can help someone.

  Read the article

• How can I reduce the amount of time it takes to fully regression test an application ready for release?

  - by DrLazer

  An app I work on is being developed with a modified version of scrum. If you are not familiar with scrum, it's just an alternative approach to a more traditional watefall model, where a series of features are worked on for a set amount of time known as a sprint. The app is written in C# and makes use of WPF. We use Visual C# 2010 Express edition as an IDE. If we work on a sprint and add in a few new features, but do not plan to release until a further sprint is complete, then regression testing is not an issue as such. We just test the new features and give the app a good once over. However, if a release is planned that our customers can download - a full regression test is factored in. In the past this wasn't a big deal, it took 3 or 4 days and the devs simply fix up any bugs found in the regression phase, but now, as the app is getting larger and larger and incorporating more and more features, the regression is spanning out for weeks. I am interested in any methods that people know of or use that can decrease this time. At the moment the only ideas I have are to either start writing Unit Tests, which I have never fully tried out in a commercial environment, or to research the possibilty of any UI Automation API's or tools that would allow me to write a program to perform a series of batch tests. I know literally nothing about the possibilities of UI automation so any information would be valuable. I don't know that much about Unit testing either, how complicated can the tests be? Is it possible to get Unit tests to use the UI? Are there any other methods I should consider? Thanks for reading, and for any advice in advance.

  Read the article

• MySQL documentation writer wanted

  - by stefanhinz

  As MySQL is thriving and growing, we're looking for an experienced technical writer located in Europe or North America to join the MySQL documentation team.For this job, we need the best and most dedicated people around. You will be part of a geographically distributed documentation team responsible for the technical documentation of all MySQL products. Team members are expected to work independently, requiring discipline and excellent time-management skills as well as the technical facilities to communicate across the Internet.Candidates should be prepared to work intensively with our engineers and support personnel. The overall team is highly distributed across different geographies and time zones. Our source format is DocBook XML. We're not just writing documentation, but also handling publication. This means you should be familiar with DocBook, and willing to learn our publication infrastructure.Candidates should therefore be interested not just in writing but also in the technical aspects of publishing documentation. Regarding your initial areas of authoring, those would be MySQL Cluster, MySQL Enterprise Monitor and Backup, and various parts of the MySQL server documentation (also known as the MySQL Reference Manual). This means you should be familiar with MySQL in general, and preferably also with MySQL Cluster and the MySQL Enterprise offerings.Other qualifications: Native English speaker 3 or more years previous experience in writing software documentation Excellent written and oral communication skills Ability to provide (online) samples of your work, e.g. books or articles Curiosity to learn new technologies Familiarity with distributed working environments and versioning systems such as SVN Comfortable with working on multiple operating systems, particularly Windows, Mac OS X, and Linux Ability to administer own workstations and test environment If you're interested, contact me under [email protected].

  Read the article

• Mahout - Clustering - "naming" the cluster elements

  - by Mark Bramnik

  I'm doing some research and I'm playing with Apache Mahout 0.6 My purpose is to build a system which will name different categories of documents based on user input. The documents are not known in advance and I don't know also which categories do I have while collecting these documents. But I do know, that all the documents in the model should belong to one of the predefined categories. For example: Lets say I've collected a N documents, that belong to 3 different groups : Politics Madonna (pop-star) Science fiction I don't know what document belongs to what category, but I know that each one of my N documents belongs to one of those categories (e.g. there are no documents about, say basketball among these N docs) So, I came up with the following idea: Apply mahout clustering (for example k-mean with k=3 on these documents) This should divide the N documents to 3 groups. This should be kind of my model to learn with. I still don't know which document really belongs to which group, but at least the documents are clustered now by group Ask the user to find any document in the web that should be about 'Madonna' (I can't show to the user none of my N documents, its a restriction). Then I want to measure 'similarity' of this document and each one of 3 groups. I expect to see that the measurement for similarity between user_doc and documents in Madonna group in the model will be higher than the similarity between the user_doc and documents about politics. I've managed to produce the cluster of documents using 'Mahout in Action' book. But I don't understand how should I use Mahout to measure similarity between the 'ready' cluster group of document and one given document. I thought about rerunning the cluster with k=3 for N+1 documents with the same centroids (in terms of k-mean clustering) and see whether where the new document falls, but maybe there is any other way to do that? Is it possible to do with Mahout or my idea is conceptually wrong? (example in terms of Mahout API would be really good) Thanks a lot and sorry for a long question (couldn't describe it better) Any help is highly appreciated P.S. This is not a home-work project :)

  Read the article

• Gathering application architecture

  - by userbb

  Suppose there is system for gathering info about system activities. There is a client part with an interface and there are agent parts that are installed on each machine. I estimate that there could be max 20 computers now. Later could be more like 50. My solutions: Agent stores data into local database e.g. sqlite. There is also a service which can be used by a client to query data. So if a client wants to display data for 50 computers, he sends a query to 50 computers. I'am on that solution now but maybe it's totally wrong. Agent stores data into local database (I don't known good one for that). There is also server (main database) and local databases are synchronized with the server. In this case, a client connects to the main database to display data. Agent sends data in realtime to main database. So same as point 2, but there is no sync. Like in point 3, but agent buffers data in local database and sends it in small chunks to main database. What is the best approach?

  Read the article

• How to Disable Touchpad tap in Toshiba Tecra R850 in Oneiric - it is recognized as a PS/2 mouse

  - by Kibi

  I know there's a lot of similar questions, but nothing I have tried here works yet - perhaps I was doing it wrong. New Laptop - Toshiba Tecra R850 with an install of Oneiric 64 bit. Mostly things are working well, but I have a problem with the touchpad (or whatever it's called) - whenever I use it for moving the mouse pointer I accidentally tap on it - basically I am clicking all over the place by accident. So I want to disable the tap-as-click (after all, I have buttons for clicks too). I open up "Mouse and Touchpad" and on the Touchpad tab I check "Disable touchpad when typing" and UNcheck "Enable mouse clicks with touchpad". This does not achieve anything. Ditto Synaptiks and other similar tools. EDIT OK it turns out that this is a somewhat known problem - it seems the touchpad is not being recognized as a touchpad, it is seen as a PS/2 mouse. So any adjustments made with various settings programs to the "touchpad" don't affect it. I've been looking at solutions for getting the touchpad correctly recognized and not achieved it yet - seems there is a problem at the kernel level...I tried (foolishly) a suggestion to replace the psmouse.ko driver ...this screwed some stuff up and didn't solve my problem. So - anyone know an answer? Thanks Kibi

  Read the article

• Non-dynamic CMS [closed]

  - by user20457

  Some of the web sites I visit every day (news, sports, etc..), although the content changes very often (several times per day), the URLs always have .html extension, what makes me thing that the content has been generated once, and then published as a static page, rather than generated in every call, or even cached in memory. For example, the fictitious site "mysports.com" have a "futbol.html" page, and then yesterday Messi gets injured and they have another thing to put in that page, then I presume they post the new item in their CMS system, and automatically a publishing action is triggered aftewards that recreates "futbol.html" in a CDN with the new item and probably discard the oldest one. Then the ETag changes and clients will get the new page if they try to access it. (the site is fictitious but this is what I believe happened yesterday in the sports site I read) This would fit in the CQRS approach, and I presume they have a huge performance. I know lots of CMS (WP, Drupal, BlogEngine.net, DNN, etc...), but I have never seen any able of doing this, or at least, I was not aware this feautre. How are called those distributed CMS? Which are the most well known? Cheers.

  Read the article

• XAML RadControls are out with Q1 2010 SP1

  Our main focus with Q1 2010 SP1 release is the official launch of RadControls for Silverlight 4 RTW. Shortly after the official announcement on April 15th we delivered the natively built suite on Silverlight 4 to empower our clients with the advantages of the new capabilities for developing robust enterprise applications. The suite features support for both Microsoft Visual Studio 2010 and Microsoft SharePoint 2010. With Q1 2010 SP1 we have delivered installations for both Silverlight 3 and Silverlight 4. Well keep the support for Silverlight 3 with full installations until the Q2 2010 release and after that will ship upgrades only with binaries. The binaries for Silverlight 3 will contain only major bug fixes but wont include new features. This support will be discontinued with our Q3 release when we believe the full adoption of VS 2010 and Silverlight 4 will be completed. Another important note regarding the current ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• Blog Rebranding

  I have been spending more and more time on learning as much as I can on Agile Development and also have been fairly immersed in rolling out TFS 2010 in our environment.  I feel like it is time to talk about some of my experiences.  With that, I am rebranding my blog to focus on these topics.  I am going to start with a bunch of blogs on the process I have gone through getting TFS 2010 configured for our development teams. Last week, Brian Harry was in our office and gave a great talk on the improved tools in TFS 2010 and how Microsoft uses the tools internally.  I followed that up with a high-level overview of the improved out of the box process templates and the process to customize them.  I am definitely very excited about the new features in 2010 and hopefully will keep up my motivation to blog about it.  I am writing my first post right now about the process I went through to build a task progress report based on the user story progress report in the MSF for Agile Development template.  Stay tunedDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• Performance Testing &ndash; Quick Reference Guide &ndash; Released up on CodePlex

  - by Shawn Cicoria

  Why performance test at all right?  Well, physics still plays a role in what we do.  Why not take a better look at your application – need help, well, the Rangers team just released the following to help: The following has both VS2008 & VS2010 content: http://vstt2008qrg.codeplex.com/ Visual Studio Performance Testing Quick Reference Guide (Version 2.0) The final released copy is here and ready for full time use. Please enjoy and post feedback on the discussion board. This document is a collection of items from public blog sites, Microsoft® internal discussion aliases (sanitized) and experiences from various Test Consultants in the Microsoft Services Labs. The idea is to provide quick reference points around various aspects of Microsoft Visual Studio® performance testing features that may not be covered in core documentation, or may not be easily understood. The different types of information cover: How does this feature work under the covers? How can I implement a workaround for this missing feature? This is a known bug and here is a fix or workaround. How do I troubleshoot issues I am having

  Read the article

• Any good reason to open files in text mode?

  - by Tinctorius

  (Almost-)POSIX-compliant operating systems and Windows are known to distinguish between 'binary mode' and 'text mode' file I/O. While the former mode doesn't transform any data between the actual file or stream and the application, the latter 'translates' the contents to some standard format in a platform-specific manner: line endings are transparently translated to '\n' in C, and some platforms (CP/M, DOS and Windows) cut off a file when a byte with value 0x1A is found. These transformations seem a little useless to me. People share files between computers with different operating systems. Text mode would cause some data to be handled differently across some platforms, so when this matters, one would probably use binary mode instead. As an example: while Windows uses the sequence CR LF to end a line in text mode, UNIX text mode will not treat CR as part of the line ending sequence. Applications would have to filter that noise themselves. Older Mac versions only use CR in text mode as line endings, so neither UNIX nor Windows would understand its files. If this matters, a portable application would probably implement the parsing by itself instead of using text mode. Implementing newline interpretation in the parser might also remove some overhead of using text mode, as buffers would need to be rewritten (and possibly resized) before returning to the application, while this may be less efficient than when it would happen in the application instead. So, my question is: is there any good reason to still rely on the host OS to translate line endings and file truncation?

  Read the article

• Oracle Virtual Desktop Infrastructure

  - by Fat Bloke

  A lot of the recent blog entries here have been about Oracle VM VirtualBox, possibly the coolest personal desktop virtualization product known to man. Deploying VirtualBox on your PC or Mac lets you run many virtual desktops at the same time to one user, you. But did you know that VirtualBox can also power an Enterprise-scale virtual desktop deployment too, delivering many desktops to many users?  As part of another Oracle product, Oracle Virtual Desktop Infrastructure (VDI), VirtualBox can run your Windows, Linux or Solaris desktops on servers located in the datacenter. Oracle VDI orchestrates the whole deal by looking after : creating or cloning the virtual desktops from a master template; managing the lifecycle of the desktops (create, start, suspend, resume, stop, delete); assigning which users get which desktops;  delivering easy and fast access to these virtual desktops from almost any device, such as existing PCs or Macs, iPads, or specially designed Sun Ray client devices too; load balancing and session management of all of this.  Architecturally the solution looks something like this: This is an increasingly hot area of the IT landscape, so the Fat Bloke has decided to create a new blog category (VDI) and dedicate a few blog entries to look into this in a bit more detail over the next few weeks. Watch this space... - FB 

  Read the article

• cookie not being sent when requesting JS

  - by Mala

  I host a webservice, and provide my members with a Javascript bookmarklet, which loads a JS sript from my server. However, clients must be logged in, in order to receive the JS script. This works for almost everybody. However, some users on setups (i.e. browser/OS) that are known to work for other people have the following problem: when they request the script via the javascript bookmarklet from my server, their cookie from my server does not get included with the request, and as such they are always "not authenticated". I'm making the request in the following way: var myScript = eltCreate('script'); myScript.setAttribute('src','http://myserver.com/script'); document.body.appendChild(myScript); In a fit of confused desperation, I changed the script page to simply output "My cookie has [x] elements" where [x] is count($_COOKIE). If this extremely small subset of users requests the script via the normal method, the message reads "My cookie has 0 elements". When they access the URL directly in their browser, the message reads "My cookie has 7 elements". What on earth could be going on?!

  Read the article

• Returning a flexible datatype from a C++ function

  - by GavinH

  I'm developing for a legacy C++ application which uses ODBC for it's data access. Coming from a C# background, I really miss the ADO style of data access. I'm writing a wrapper (because we can't actually use ADO) to make our data access less painful. This means no char arrays, no manual text blob streaming, and no declaritive column binding. I'm struggling with how to store / return data values. In C# at least, you can declare an object and cast it to whatever (as long as the type is convertable). My current C++ solution is to use boost::any to store the data value in a custom DataColumnValue object. This class has conversion and assignment operators to the various types used in our app (more than 10). There's a bit of complexity here because if you store an int in the boost::any and try to boost::any_cast<long> you get a boost::bad_any_cast. Client objects shouldn't have to know how the value is stored internally. Does anyone have any experience trying to store / return values whose types are only known at runtime? Is there a better / cleaner way?

  Read the article

• Architecture for dashboard showing aggregated stats [on hold]

  - by soulnafein

  I'd like to know what are common architectural pattern for the following problem. Web application A has information on sales, users, responsiveness score, etc. Some of this information are computationally intensive and or have a complex business logic (e.g. responsiveness score). I'm building a separate application (B) for internal admin tasks that modifies data in web application A and report on data from web application A. For writing I'm planning to use a restful api. E.g. create a new entity, update entity, etc. In application B I'd like to show some graphs and other aggregate data for the previous 12 months. I'm planning to store the aggregate data for each month in redis. Some data should update more often, e.g every 10 minutes. I can think of 3 ways of doing this. A scheduled task in app B that connects to an api of app A that provides some aggregated data. Then app B stores it in Redis and use that to visualise pages. Cons: it makes complex calculation within a web request, requires lot's of work e.g. api server and client, storing, etc., pros: business logic still lives in app A. A scheduled task in app A that aggregates data in an non-web process and stores it directly in Redis to be accessed by app B. A scheduled task in app A that aggregates data in a non-web process and uses an api in app B to save it. I'd like to know if there is a well known architectural solution to this type of problems and if not what are other pros/cons for the solution I've suggested?

  Read the article

< Previous Page | 311 312 313 314 315 316 317 318 319 320 321 322  | Next Page >