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• How to represent a graph with multiple edges allowed between nodes and edges that can selectively disappear

  - by Pops

  I'm trying to figure out what sort of data structure to use for modeling some hypothetical, idealized network usage. In my scenario, a number of users who are hostile to each other are all trying to form networks of computers where all potential connections are known. The computers that one user needs to connect may not be the same as the ones another user needs to connect, though; user 1 might need to connect computers A, B and D while user 2 might need to connect computers B, C and E. Image generated with the help of NCTM Graph Creator I think the core of this is going to be an undirected cyclic graph, with nodes representing computers and edges representing Ethernet cables. However, due to the nature of the scenario, there are a few uncommon features that rule out adjacency lists and adjacency matrices (at least, without non-trivial modifications): edges can become restricted-use; that is, if one user acquires a given network connection, no other user may use that connection in the example, the green user cannot possibly connect to computer A, but the red user has connected B to E despite not having a direct link between them in some cases, a given pair of nodes will be connected by more than one edge in the example, there are two independent cables running from D to E, so the green and blue users were both able to connect those machines directly; however, red can no longer make such a connection if two computers are connected by more than one cable, each user may own no more than one of those cables I'll need to do several operations on this graph, such as: determining whether any particular pair of computers is connected for a given user identifying the optimal path for a given user to connect target computers identifying the highest-latency computer connection for a given user (i.e. longest path without branching) My first thought was to simply create a collection of all of the edges, but that's terrible for searching. The best thing I can think to do now is to modify an adjacency list so that each item in the list contains not only the edge length but also its cost and current owner. Is this a sensible approach? Assuming space is not a concern, would it be reasonable to create multiple copies of the graph (one for each user) rather than a single graph?

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• Killing CLOSE_WAIT sockets without killing parent process on Linux

  - by Alex Neth

  Tomcat is leaving me with CLOSE_WAIT sockets which ultimately saturate the maximum number of connections. I've tried many methods in my client and server code to get rid of these to no avail, including closing connections, calling System.gc(), etc. Now I'm trying to find a way to simply time these out quickly in the OS. I've got conntrack working, but am not sure how to use that to kill these connections. I've also set /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_timeout_close_wait to 1, which of course is too low but the connections persist. Is there a way to kill these zombie sockets? Running Ubuntu.

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• OpenGL - Rendering from part of an index and vertex array depending on an element count

  - by user1423893

  I'm currently drawing my shapes as lines by using a VAO and then assigning the dynamic vertices and indices each frame. // Bind VAO glBindVertexArray(m_vao); // Update the vertex buffer with the new data (Copy data into the vertex buffer object) glBufferData(GL_ARRAY_BUFFER, numVertices * sizeof(VertexPosition), m_vertices.data(), GL_DYNAMIC_DRAW); // Update the index buffer with the new data (Copy data into the index buffer object) glBufferData(GL_ELEMENT_ARRAY_BUFFER, numIndices * sizeof(unsigned short), indices.data(), GL_DYNAMIC_DRAW); glDrawElements(GL_LINES, numIndices, GL_UNSIGNED_SHORT, BUFFER_OFFSET(0)); // Unbind VAO glBindVertexArray(0); What I would like to do is draw the lines using only part of the data stored in the index and vertex buffer objects. The vertex buffer has its vertices set from an array of defined maximum size: std::array<VertexPosition, maxVertices> m_vertices; The index buffer has its elements set from an array of defined maximum size: std::array<unsigned short, maxIndices> indices = { 0 }; A running total is kept of the number of vertices and indices needed for each draw call numVertices numIndices Can I not specify that the buffer data contain the entire array and only read from part of it when drawing? For example using the vertex buffer object glBufferData(GL_ARRAY_BUFFER, numVertices * sizeof(VertexPosition), m_vertices.data(), GL_DYNAMIC_DRAW); m_vertices.data() = Entire array is stored numVertices * sizeof(VertexPosition) = Amount of data to read from the entire array Is this not the correct way to approach this? I do not wish to use std::vector if possible.

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• Raid 5 with 4 disks on Debian automatically creates a spare drive

  - by Razer

  I'm trying to to create a RAID 5 with 4x 2TB disks on Debian 6. I followed the instructions from: http://zackreed.me/articles/38-software-raid-5-in-debian-with-mdadm I created the raid with following command: sudo mdadm --create --verbose /dev/md0 --auto=yes --level=5 --raid-devices=4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 After creating the RAID mdadm --detail /dev/md0 shows me: /dev/md0: Version : 1.2 Creation Time : Mon Jun 11 18:14:26 2012 Raid Level : raid5 Array Size : 5860535808 (5589.04 GiB 6001.19 GB) Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon Jun 11 18:14:26 2012 State : clean, degraded Active Devices : 3 Working Devices : 4 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 512K Name : rsserver:0 (local to host rsserver) UUID : a68c3c99:1ef865e9:5a8a7bdc:64710ed8 Events : 0 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 2 8 49 2 active sync /dev/sdd1 3 0 0 3 removed 4 8 65 - spare /dev/sde1 Why is there a spare drive? I didn't create one. I don't want to use a spare drive.

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• CodePlex Daily Summary for Sunday, September 09, 2012

  CodePlex Daily Summary for Sunday, September 09, 2012Popular ReleasesMishra Reader: Mishra Reader Beta 4: Additional bug fixes and logging in this release to try to find the reason some users aren't able to see the main window pop up. Also, a few UI tweaks to tighten up the feed item list. This release requires the final version of .NET 4.5. If the ClickOnce installer doesn't work for you, please try the additional setup exe.Xenta Framework - extensible enterprise n-tier application framework: Xenta Framework 1.9.0: Release Notes Imporved framework architecture Improved the framework security More import/export formats and operations New WebPortal application which includes forum, new, blog, catalog, etc. UIs Improved WebAdmin app. Reports, navigation and search Perfomance optimization Improve Xenta.Catalog domain More plugin interfaces and plugin implementations Refactoring Windows Azure support and much more... Package Guide Source Code - package contains the source code Binaries...Json.NET: Json.NET 4.5 Release 9: New feature - Added JsonValueConverter Fix - Fixed DefaultValueHandling.Ignore not igoring default values of non-nullable properties Fix - Fixed DefaultValueHandling.Populate error with non-nullable properties Fix - Fixed error when writing JSON for a JProperty with no value Fix - Fixed error when calling ToList on empty JObjects and JArrays Fix - Fixed losing decimal precision when writing decimal JValuesMicrosoft Ajax Minifier: Microsoft Ajax Minifier 4.66: Just going to bite the bullet and rip off the band-aid... SEMI-BREAKING CHANGE! Well, it's a BREAKING change to those who already adjusted their projects to use the previous breaking change's ill-conceived renamed DLLs (versions 4.61-4.65). For those who had not adapted and were still stuck in this-doesn't-work-please-fix-me mode, this is more like a fixing change. The previous breaking change just broke too many people, I'm sorry to say. Renaming the DLL from AjaxMin.dll to AjaxMinLibrary.dl...DotNetNuke® Community Edition CMS: 07.00.00 CTP (Not for Production Use): NOTE: New Minimum Requirementshttp://www.dotnetnuke.com/Portals/25/Blog/Files/1/3418/Windows-Live-Writer-1426fd8a58ef_902C-MinimumVersionSupport_2.png Simplified InstallerThe first thing you will notice is that the installer has been updated. Not only have we updated the look and feel, but we also simplified the overall install process. You shouldn’t have to click through a series of screens in order to just get your website running. With the 7.0 installer we have taken an approach that a...BIDS Helper: BIDS Helper 1.6.1: In addition to fixing a number of bugs that beta testers reported, this release includes the following new features for Tabular models in SQL 2012: New Features: Tabular Display Folders Tabular Translations Editor Tabular Sync Descriptions Fixed Issues: Biml issues 32849 fixing bug in Tabular Actions Editor Form where you type in an invalid action name which is a reserved word like CON or which is a duplicate name to another action 32695 - fixing bug in SSAS Sync Descriptions whe...Umbraco CMS: Umbraco 4.9.0: Whats newThe media section has been overhauled to support HTML5 uploads, just drag and drop files in, even multiple files are supported on any HTML5 capable browser. The folder content overview is also much improved allowing you to filter it and perform common actions on your media items. The Rich Text Editor’s “Media” button now uses an embedder based on the open oEmbed standard (if you’re upgrading, enable the media button in the Rich Text Editor datatype settings and set TidyEditorConten...menu4web: menu4web 0.4.1 - javascript menu for web sites: This release is for those who believe that global variables are evil. menu4web has been wrapped into m4w singleton object. Added "Vertical Tabs" example which illustrates object notation.Microsoft SQL Server Product Samples: Database: AdventureWorks OData Feed: The AdventureWorks OData service exposes resources based on specific SQL views. The SQL views are a limited subset of the AdventureWorks database that results in several consuming scenarios: CompanySales Documents ManufacturingInstructions ProductCatalog TerritorySalesDrilldown WorkOrderRouting How to install the sample You can consume the AdventureWorks OData feed from http://services.odata.org/AdventureWorksV3/AdventureWorks.svc. You can also consume the AdventureWorks OData fe...Desktop Google Reader: 1.4.6: Sorting feeds alphabetical is now optional (see preferences window)Lightweight Fluent Workflow: objectflow 1.4.0.1: Changes in this release;Exception handling policies Install on NuGet console; Install-Package objectflow.core -pre Supported work-flow patterns Exception policies Sequence Parallel split Simple merge Exclusive choice Retry Arbitrary cycles Framework Features Handle exceptions with workflow.Configure().On<Exception>() Repeat operations and functions an arbitrary number of times Retry failed lamda functions Generic interface for concise workflow registration Operations t...Droid Explorer: Droid Explorer 0.8.8.7 Beta: Bug in the display icon for apk's, will fix with next release Added fallback icon if unable to get the image/icon from the Cloud Service Removed some stale plugins that were either out dated or incomplete. Added handler for *.ab files for restoring backups Added plugin to create device backups Backups stored in %USERPROFILE%\Android Backups\%DEVICE_ID%\ Added custom folder icon for the android backups directory better error handling for installing an apk bug fixes for the Runn...LibXmlSocket: Binary: .net4.5,.netCore???????Hidden Capture (HC): Hidden Capture 1.1: Hidden Capture 1.1 by Mohsen E.Dawatgar http://Hidden-Capture.blogfa.comThe Visual Guide for Building Team Foundation Server 2012 Environments: Version 1: --Nearforums - ASP.NET MVC forum engine: Nearforums v8.5: Version 8.5 of Nearforums, the ASP.NET MVC Forum Engine. New features include: Built-in search engine using Lucene.NET Flood control improvements Notifications improvements: sync option and mail body View Roadmap for more details webdeploy package sha1 checksum: 961aff884a9187b6e8a86d68913cdd31f8deaf83WiX Toolset: WiX Toolset v3.6: WiX Toolset v3.6 introduces the Burn bootstrapper/chaining engine and support for Visual Studio 2012 and .NET Framework 4.5. Other minor functionality includes: WixDependencyExtension supports dependency checking among MSI packages. WixFirewallExtension supports more features of Windows Firewall. WixTagExtension supports Software Id Tagging. WixUtilExtension now supports recursive directory deletion. Melt simplifies pure-WiX patching by extracting .msi package content and updating .w...Iveely Search Engine: Iveely Search Engine （0.2.0）: ????ISE?0.1.0??，?????，ISE?0.2.0?????????，???????，????????20???follow?ISE，????，??ISE??????????，??????????，?????????，?????????0.2.0??????，??????????。 Iveely Search Engine ?0.2.0?????????“??????????”，??????，?????????，???????，???????????????????，????、????????????。???0.1.0????????????： 1. ??“????” ??。??????????，?????????，???????????????????。??：????????，????????????，??????????????????。??????。 2. ??“????”??。?0.1.0??????，???????，???????????????，?????????????，????????，?0.2.0?，???????...GmailDefaultMaker: GmailDefaultMaker 3.0.0.2: Add QQ Mail BugfixSmart Data Access layer: Smart Data access Layer Ver 3: In this version support executing inline query is added. Check Documentation section for detail.New ProjectsAjax based Multi Forms ASP.NET Framework (Amfan): Ajax based Multi Forms ASP.NET Framework (Amfan) reduces the limitations of the Asp.Net by creating multiple sub-forms of the page as separate aspx pages.APO-CS: A straight port of Apophysis to C#.BaceCP / ???? ????? ?? ???????? ????: BaceCP e ??????????? ???????? ?? ????????, ??????????? ? ????????? ?? ???? ????? ?? ???????? ????.CafeAdm Messenger: CafeAdm Messenger Allows a server connection for CafeAdm Schedule and MessengerDECnet 2.0 Router: A user mode DECnet 2.0 router that will interoperate with the HECnet bridge.DriveManager: This is a common utility to provide an interface for all cloud based drive providers like google drive, dropbox, MS Sky Drive. Email Tester: This utility will help you check your SMTP settings for SharePoint. It is best for Pre-PROD and PROD environment where you can't modify code.EvoGame: The evo game that im working onforebittims: Project Owner : ForeBitt Inc. Sri Lanka Project Manager : Chackrapani Wickramarathne Technologies : VS 2010, C#, Linq to Sql, Sql server 2008 R2, Dev ExpressMCServe: MCServe is the minecraft-server which takes advantage of the performance of the .NET FrameworkMental: Ðang trong quá trình phát tri?nSalaryManagementSys: SalaryManagementSysVKplay: This application is audio player, launches on windows phone platform and uses music from vk.com social network.

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• VMware - Watching multiple virtual machine screens

  - by mr.b

  Hi, I don't know even if I put the question right, but here's what I'd like to accomplish. I have avoided specifying exact Vmware virtualization product here because I'm not sure which one would be most suitable for the task at hand. I am developing an application that works in local network. This application has to run on several computers at the same time, and it's important to me, as a developer and tester, to see (literally) how it behaves at all times on all computers. Is there any way to connect to screens of virtual machines deployed on ESX, ESXi, Sever 2.0, or some other product, so that I can see something like grid of screens, say 4x4 or 6x4 or whatever number of scaled screens, at the same time? Ability to interact with screens directly from grid (by double-clicking a screen, for instance, and then getting full resolution screen) would be greatly appreciated, of course. I hope that someone understood what I meant here. :)

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• Using template questions in a technical interview

  - by Desolate Planet

  I've recently been in an argument with a colleague about technical questions in interviews. As a graduate, I went round lots of companies and noticed they used the same questions. An example is "Can you write a function that determines if a number is prime or not?", 4 years later, I find that particular question is quite common even for a junior developer. I might not be looking at this the correct way, but shouldn't software houses be intelligent enough to think up their own interview questions? I've been to about 16 interviews as a graduate and the same questions came up in about 75% of them. This leads me to believe that many companies are lazy and simply Google: 'Template questions for interviewing software developers' and I look down on that. Question: Is it better to use a set of questions off some template or should software houses strive to be more original and come up with their own interview material? From my point of view, if I failed an interview and went off and looked for good answers to the questions I messed up on, I could fly through the next interview if the questions are the same.

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• XboxMP Helps You Find Multiplayer Games for the Xbox

  - by Jason Fitzpatrick

  Searching for the perfect versus or cooperative Xbox multiplayer game can be challenging–the game publisher says it plays four but what exactly does that mean? XboxMP catalogs games with detailed breakdowns of what the multiplayer experience actually entails. You can search first generation Xbox games, Xbox 360 games, and Xbox Live Arcade games with a variety of detailed criteria including the number of players it supports for local, system link, and online play (it may be a deal breaker, for example, that the only way to play the game with 4 players is to have two Xboxes or an Xbox live account). In addition to the multiplayer game data each game listing also includes addition information about the general game play including peripheral support and other features. Hit up the link below to check it out and, for more help finding multiplayer cooperative games, make sure to check out previously reviewed Co-Optimus. XBoxMP What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8 HTG Explains: Why You Shouldn’t Use a Task Killer On Android

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• Network DFS Shares Jumping Back To Root

  - by Taz

  We map several network drives to DFS locations via a logon script. Recently we've had a number of users complain of a very unusual behaviour when navigating these shares. They will be going through folders and will get 'rubber-banded' back to the root of the share. This will happen for a few minutes and then go back to behaving normally. The users are on Windows 7 and the fileshare is on Windows Server 2K8R2. Any idea what could be causing this annoying behaviour?

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• Mirror DFS configuration data between 2 servers/ sites

  - by Retro69

  I have 1 Windows 2008 R2 server in Site A running Domain Integrated DFS in 2008 mode with a Single Namespace with a large number of DFS Targets all configured to point to a share on our NetApp SAN. Step 1. I want to initially copy this configuration data across to a 2012 server in Site A preserving all the configuration data. Step 2. I need to mirror this configuration to a 2nd server in Site B so we dont have a single point of failure for the DFS namespace. For Example. A user in Site B would "connect" to the DFS server in Site B, but if that site was down, it would attempt to connect to the Server in site A and vice versa. Note im not interesting in replicating actual Data here, just the configuration. Our NetApp SANS have mirroring which take care of that. Is this possible? Many thanks.

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• Sorting IPv4 Addresses

  - by Kumba

  So I've run into a quandary on sorting IPv4 addresses, and didn't know if there was a set rule in some obscure networking document. Do I do a straight sort on the raw address only (such as converting the IP address to a 32bit number and then sorting), do I factor in the CIDR via some mathematical formula, do I sort via the CIDR only (as if I'm comparing the network size and not the addresses directly)? I.e., normal math, we'd do something like -1 < 0 < 1 to denote the order of precedence. Given say, 10.1.0.0/16, 172.16.0.0/12, 192.168.1.0/24, and 192.168.1.42, what would be the order of precedence?

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• Hyper-v vs Virtualbox

  - by user53864

  I am using Oracle VirtualBox for ubuntu guest virtual servers on windows server 2008 R2. I'm in a plan to migrate(stop using virtualbox) from VirtualBox to Hyper-V. I guess many are using hyper-v virtualization and have good control over it and could help me here in clarifying few things. The reason I use Virtualbox is it's open source and the reason for migrating is that if hyper-v support any additional feature which virtualbox doesn't(and I couldn't migrate VBox vms along with all the snapshots). I have following questions to get it clarified. Does hyper-v require any licence or is limited to running particular number of virtual machines?. Is hyper-v capable to export/import VMs along with all the snapshots? Is it possible to run HeadLess VMs like it's done with VirtualBox? Does hyper-v recognize VDI/VMDK? Anybody can suggest me anything?. Thanks!

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• Oracle Tutor - Is Anyone Reading Your Documentation?

  - by mary.keane

  If you are responsible for documenting your business practices, wouldn't it be nice to know if anyone is using the documentation? If the employees find it useful? You might want to consider surveying the users of the documentation on a regular basis. There are a number of free survey tools online (search for "free survey tools"), and you can have a survey ready in a matter of minutes. It's as simple as gathering a list of questions and a list of email addresses. For the questions, here are some suggestions. How often do you access the policy and procedure site? How useful is the site? How easy is it to navigate the site? How often are your questions answered on the site? What suggestions do you have to make the site more useful? You may want to consider just asking a few questions each month so that employees can complete the survey in less than 5 minutes (you'll get more responses). Make sure you have several comment boxes in the survey so that the employees can give suggestions. As the users of your documentation, the employees may have some terrific ideas that will enhance the usability of your policy and procedure site. It would be great to hear your suggestions for how to survey the users of your documentation. Mary R. Keane Senior Development Manager, Oracle BPM and Tutor

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• Incremental backup and sync software

  - by martjno

  I need a free software for Windows (with gui or command line) that does incremental backup copying all files and storing changed or deleted files in a directory named like last change date (or a progressive number). To be more precise: D:\ is my Data drive E:\ is my Backupdrive. If i want to backup all my data from D:\: E:\d_lastbackup\ will contain a plain copy of all the files and folder content (no compression or archiving, same files attributes) of D E:\d_20090822\ will contain all files (with their full path) that are changed or deleted in the last version (since the previous one) E:\d_20090820\ will contain all files (with their full path) that are changed or deleted in the last version (since the previous one) and so on... I had a software working prefectly with an old USB harddsik by Maxtor, but it works only on that device. Any suggestion?

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• some keyboard keys not working properly

  - by surfmadpig

  I'm using Windows 7. All of a sudden, a couple of hours ago, this happened: My keyboard number keys [above the letters] stopped working properly, both as numbers and as symbols. Only 5 and 6 are functional. Also, I've noticed that the End key isn't working either, and perhaps a couple more from that group. I'm pretty sure it has something to do with those evil Sticky Keys/Filter Keys/ whatever those ease of access things are, BUT I've turned off all the ease of access keyboard options and nothing has changed. Is it possible that something is still turned on while I unchecked it? Are the on/off checkboxes to control WHEN it happens or IF it happens? I also tried rebooting and uninstalling/reinstalling keyboard from device manager, to no avail. It's certainly a software issue and not a hardware issue, as I've tried another keyboard and the problem persists. And, predictably enough, it's annoying. Any ideas?

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• AdvanceTimePolicy and Point Event Streams In StreamInsight.

  There are a number of ways to issues CTIs (Current Time Increments) into your StreamInsight streams but a quite useful way is to do it declaratively on your source factory like this public AdapterAdvanceTimeSettings DeclareAdvanceTimeProperties<TPayload>(InputConfig configInfo, EventShape eventShape) {     return new AdapterAdvanceTimeSettings(         new AdvanceTimeGenerationSettings(configInfo.CtiFrequency, TimeSpan.FromTicks(-1)),         AdvanceTimePolicy.Adjust); } This will issue a CTI after every event and allows no delay (for delayed events) by stamping the CTI with the timestamp of the last event minus 1 tick. The very last statement "AdvanceTimePolicy.Adjust" tells the adapter what to do with events that violate the policy (arrive late).  From BOL "Events that violate the inserted CTI are moved in time if their lifetime overlaps with the CTI timestamp. That is, the start timestamp of the events is set to the most recent CTI timestamp, which renders those events valid. If both start and end time of an event fall before the CTI timestamp, then the event is dropped." This means that if you are using this method of inserting CTIs for a Point event stream and have specified "AdvanceTimePolicy.Adjust" for the violation policy, this setting will be ignored and instead it will use "AdvanceTimePolicy.Drop" because a Point event can never straddle a CTI.

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• If your algorithm is correct, does it matter how long it took you to write it?

  - by John Isaacks

  I recently found out that Facebook had a programming challenge that if completed correctly you automatically get a phone interview. There is a sample challenge that asks you to write an algorithm that can solve a Tower of Hanoi type problem. Given a number of pegs and discs, an initial and final configuration; Your algorithm must determine the fewest steps possible to get to the final configuration and output the steps. This sample challenge gives you a 45 minute time limit but allows you to still test your code to see if it passes once your time limit expires. I did not know of any cute math solution that could solve it, and I didn't want to look for one since I think that would be cheating. So I tried to solve the challenge the best I could on my own. I was able to make an algorithm that worked and passed. However, it took me over 4 hours to make, much longer than the 45 minute requirement. Since it took me so much longer than the allotted time, I have not attempted the actual challenge. This got me wondering though, in reality does it really matter that it took me that long? I mean is this a sign that I will not be able to get a job at a place like this (not just Facebook, but Google, Fog Creek, etc.) and need to lower my aspirations, or does the fact that I actually passed on my first attempt even though it took too long be taken as good?

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• I have an MIS degree. How do I sell myself as a programmer?

  - by hydroparadise

  So, I graduated with a BSBA in Management Information Systems with honors almost 2 years ago which is more of a business degree. As of right now, I do have a job title of "Programmer", but it's more of a report writing position in an arbitrary, proprietary language called PowerOn with the occasional interesting project using more mainstream technologies like .Net and Java. I am also somewhat isoloated being the only programmer in the workplace, which I beleive is a detriment to my career path. The only people I have to bounce ideas against are those on the various SE sites. I don't regret going MIS, but over the past couple of years I have discovered my passion for coding, even though I have been doing some form of coding profesionally and as an enthusiast for years. I do want to persue my Masters in CS (at a later time), but I am not sure if I necessarily need a CS degree to get in with a team of programmers. In addition, I do have a number classes I have taken for different laguanges on the way (C++, Java, SQL, and VB.Net) I beleive my strength is in problem solving where code is just a tool to tackling to problem if needed. My question: How do I best sell myself as a programmer? Should I continue pounding out reports and wait till I have my masters in CS? Or am I viable to be a programmer as I stand?

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• MySQL Server Not Starting on Boot

  - by Brian

  I have installed MySQL on a RHEL 5 server and I'm wanting to set it up so that the server starts on boot. I've ran the "chkconfig --list mysqld" command and it's currently running on levels 3, 4 and 5. However, when I reboot the server, no mysqld process is started. I've also tried manually starting the server by executing "/usr/bin/mysqld_safe" and I get the following output: Starting mysqld daemon with databases from /var/lib/mysql STOPPING server from pid file /var/run/mysqld/mysqld.pid 100319 10:31:30 mysqld ended I looked in /var/log/mysqld.log and I found the following: 100319 10:29:01 mysqld started 100319 10:29:02 InnoDB: Started; log sequence number 0 29752204 100319 10:29:02 [ERROR] Can't start server : Bind on unix socket: Permission denied 100319 10:29:02 [ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ? 100319 10:29:02 [ERROR] Aborting

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• ASP.NET MVC 3 (C#) Software Architecture

  - by ryanzec

  I am starting on a relatively large and ambitious ASP.NET MVC 3 project and just thinking about the best way to organize my code. The project is basically going to be a general management system that will be capable of supporting any type management system whether it be a blogging system, cms, reservation system, wikis, forums, project management system, etc…, each of them being just a separate 'module'. You can read more about it on my blog posted here : http://www.ryanzec.com/index.php/blog/details/8 (forgive me, the style of the site kinda sucks). For those who don't want to read the long blog post the basic idea is that the core system itself is nothing more than a users system with an admin interface to manage the users system. Then you just add on module as you need them and the module I will be creating is a simple blog post to test it out before I move on to the big module which is a project management system. Now I am just trying to think of the best way to structure this so that it is easy for users to add in there own modules but easy for me to update to core system without worrying about the user modifying the core code. I think the ideal way would be to have a number of core projects that user is specifically told not to modify otherwise the system may become unstable and future updates would not work. When the user wants to add in there own modules, they would just add in a new project (or multiple projects). The thing is I am not sure that it is even possible to use multiple projects all with their own controllers, razor view template, css, javascript, etc... in one web application. Ideally each module would have some of it own razor view templates, css, javascript, image files and also need access to some of the core razor view templates, css, javascript, image files which would is in a separate project. It is possible to have 1 web application run off of controllers, razor view templates, css, javascript, image files that are store in multiple projects? Is there a better was to structure this to allow the user to easily add in module with having to modify the core code?

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• Forward requests to IIS Application/Folder to Apache server on another port

  - by TheGwa

  I have found many questions and answers for ways of doing this using asapi filters or ARR and URL Rewrite, but none are clear and concise and I am sure many people have this issue. I am looking for a best practice step by step solution to the following scenario: I have a development server accessible externally via a specific port for testing. Eg. rnd.domain.com:8888. So there is one port in and out of this machine accessible to the world. On this server I have a number of Apache or other servers using specific ports such as 8080. IIS is bound to port 80 locally as well as 8888 to get external requests and works perfectly. I would like to use an application (folder) in IIS such as rnd.domain.com:8888/mapserver to map to the local apache server in both directions. The same solution must apply in production where the domain is mapped to port 80. eg. production.domain.com/mapserver maps to 8080 on production server

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• How to make the jump from consumer support to enterprise support?

  - by Zac Cramer

  I am currently a high level consumer break/fix technician responsible for about 300-400 repairs a month. I am good at my job, but bored, and I want to move into the enterprise side of my company, dealing with Server 2008 R2 and exchange and switches and routers that cost more than I make in a month. How do I make this transition? Whats the best thing to learn first? Is there a standard trajectory for making this leap from consumer to business? I am full time employed, so going back to school is not a great option, but I have no life, so spending my nights and weekends reading and practicing is totally within my realm. I am basically overwhelmed by the number of things to learn, and looking for any advice you may have on the best way to proceed. PS - I apologize if this is a not quite the right forum for this, I know its not a technical question exactly, but I also know the sorts of people I want to answer this question are reading this website.

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• Deciding on a company-wide javascript strategy [on hold]

  - by drogon

  Our company is moving most of its software from thick-client winforms apps to web apps. We are using asp.net mvc on the server side. Most of the developers are brand new to the web and need to become efficient and knowledgeable at writing client-side web code (javascript). We are deciding on a number of things and would appreciate feedback on the following: Angular.js or Backbone.js? Backbone (w/ Underscore) is certainly more light weight, but requires more custom development. Angular seems to be a full-fledged framework, but would require everyone to embrace it and probably a longer learning curve(??). (Note: I know nothing about Angular at this point) Require.js or script includes w/ MVC bundleconfig? Require.js makes development "feel like" c# (importing namespaces). But, integrating the build/minification process can be a pain (especially the configuration). Bundling via mvc requires developers to worry more about which scripts to include but has less overall development friction. Typescript vs Javascript Regardless of frameworks, our developers are going to need to learn the basics. Typescript is more like c# and MAY be easier for c# developers to understand. However, learning TypeScript before javascript may hinder their mastery of javascript at the expense of efficiency.

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• How do I make a USB stick from which to install different OS's?

  - by Hanno Fietz

  Recently, I have made a number of USB sticks to install OS's (several Linux flavors, BSD, Windows) from, on machines that didn't have CD drives. Now, I would prefer to not overwrite the install USB sticks all the time, since it's handy to have them, but neither do I want to pile up USB sticks that I only need every 6 months. It would be great to have a bootable USB stick that fires up some minimal system, lets you choose an ISO image and then reboots from there. How would I go about this? Do I use some minimal Linux? Is there some kind of modified / specialized boot loader? Can I set up GRUB to do this? Should I use virtualization?

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• Can I install Win 7 Pro with a Win 7 Home Premium disc?

  - by SeanJA

  So I got the 64bit Win 7 Pro disc from the Ultimate steal for cheap enough... but I found out that some stuff that I want to run (games mostly... since that is the only reason I keep Windows around...) did not do too well on the 64bit OS. So I have borrowed my friend's install disc, but it turns out that his is only Home Premium rather than Pro which I have a serial for. Can I still just run through the Home Premium install and use my Pro serial number (seems like I should be able to with the whole 'any time upgrade' deal)? Or do I have to go and find a 32bit pro disc to do the install? Are there any hoops that I have to jump through?

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