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• Best CPUs for speeding up compiling times of C++ w/ DistGCC

  - by Jay

  I'm putting together a distributed build farm with DistGCC to speed up our teams compile times and just looking for thoughts on which processors to use in the hosts. Are we going to get a noticeable decrease in time using 8 cores vs. 4-hyperthreaded cores? Big difference in time between i7 and Xeon? etc, etc. Just need advice from people who've put together kick-a build clusters. We've got a majority of the normal things to speed up builds in place (pre-compiled headers, ccache, local gigabit connections between them, tons of ram, etc) so please just give advice on the best processor to use. And money is a factor, but anythings doable if the performance increase is noticeable. Thanks. Jay

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• Tracking unique versions of files with hashes

  - by rwmnau

  I'm going to be tracking different versions of potentially millions of different files, and my intent is to hash them to determine I've already seen that particular version of the file. Currently, I'm only using MD5 (the product is still in development, so it's never dealt with millions of files yet), which is clearly not long enough to avoid collisions. However, here's my question - Am I more likely to avoid collisions if I hash the file using two different methods and store both hashes (say, SHA1 and MD5), or if I pick a single, longer hash (like SHA256) and rely on that alone? I know option 1 has 288 hash bits and option 2 has only 256, but assume my two choices are the same total hash length. Since I'm dealing with potentially millions of files (and multiple versions of those files over time), I'd like to do what I can to avoid collisions. However, CPU time isn't (completely) free, so I'm interested in how the community feels about the tradeoff - is adding more bits to my hash proportionally more expensive to compute, and are there any advantages to multiple different hashes as opposed to a single, longer hash, given an equal number of bits in both solutions?

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• ListView not importing data

  - by ct2k7

  Hello, I'm trying to import data into a listview and this is the code I'm using: Private Sub form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim doc As New XmlDocument doc.Load("http://user:[email protected]/1/statuses/mentions.rss") Dim nodes As XmlNodeList = doc.SelectNodes("Statuses/Status") For Each node As XmlNode In nodes Dim text As String = node.SelectSingleNode("text").InnerText Dim time As String = node.SelectSingleNode("created_at").InnerText Dim screen_name As String = node.SelectSingleNode("user/screen_name").InnerText ListView1.Items.Add(New ListViewItem(New String() {screen_name, text, time})) Next End Sub Any ideas what's going wrong here? User and password are correct.

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• Seam/JSF/Facelets Compiler or Validator (equivalent of JspC for JSP)

  - by Drew

  Is there such a thing as JspC in the Seam/JSF/Facelets world? I used the Tomcat's JspC to validate a JSP/Struts application to validate if there are typos in the JSPs or some JSP was calling a Java function that didn't exist, etc. etc. From time to time I come across bugs in my current project (Seam/Facelets/RichFaces) where it's caused by a typo in action/value binding. And I think bugs like these can be caught using a program. Just wondering if someone has already written one. Basically a tool that can validate if the method/value binding are correct. I know this would be specially hard in Seam since names are Context sensitive and the tool should somehow figure out what the context is. But I think it should be easier to just check if the names are valid and the Objects bound to those names have the methods and/or properties being referred to in the JSF page. Thanks

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• Boost.Program_Options not working with short options

  - by inajamaica

  I have the following options_description: po::options_description config("Configuration File or Command Line"); config.add_options() ("run-time,t", po::value(&runTime_)-default_value(1440.0), "set max simulation duration") ("starting-iteration,i", po::value(&startingIteration_)-default_value(1), "set starting simulation iteration") ("repetitions,r", po::value(&repetitions_)-default_value(100), "set number of iterations") ... ; As you can see the three shown have a long,short names employed. The long versions all work. However, none of the short ones do, and each time I try a -t 12345.0 or a -i 12345, etc., I get the following from Program_Options: std::logic_error: in option 'starting-iteration': invalid option value I'm using Boost 1.42 on Win32. Any thoughts on what might be going on here? Thanks!

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• How can I hot deploy using the glassfish adapter in Eclipse

  - by Greg

  Has anyone gotten the glassfish v3 adapter to work with Eclipse without restarting every time there's a code change? I tried to set this up but the adapter "republishes" every time I change any file, which is very annoying. It takes up to 3 minutes and locks up my machine for a second. I must remember to constantly stop the adapter before making any changes. I'd settle for just disabling this "feature", but even if I uncheck "publish change immediately" this behavior still happens. I'm using the latest version of the glassfish adapter and tried with eclipse 3.5 and the 3.6 milestone builds.... What setup is everyone using if you have glassfish v3 as your server? Is there any way to actually get the hot deploy feature to work correctly?

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• Launching python within python and timezone issue

  - by Gabi Purcaru

  I had to make a launcher script for my django app, and it seems it somehow switches the timezone to GMT (default being +2), and every datetime is two hours behind when using the script. What could be causing that? Here is the launcher script that I use: #!/usr/bin/env python import os import subprocess import shlex import time cwd = os.getcwd() p1 = subprocess.Popen(shlex.split("python manage.py runserver"), cwd=os.path.join(cwd, "drugsworld")) p2 = subprocess.Popen(shlex.split("python coffee_auto_compiler.py"), cwd=os.path.join(cwd)) try: while True: time.sleep(2) except KeyboardInterrupt: p1.terminate() p2.terminate() If I manually run python manage.py runserver, the timezone is +2. If, however, I use this script, the timezone is set to GMT.

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• Fast block placement algorithm, advice needed?

  - by James Morris

  I need to emulate the window placement strategy of the Fluxbox window manager. As a rough guide, visualize randomly sized windows filling up the screen one at a time, where the rough size of each results in an average of 80 windows on screen without any window overlapping another. It is important to note that windows will close and the space that closed windows previously occupied becomes available once more for the placement of new windows. The window placement strategy has three binary options: Windows build horizontal rows or vertical columns (potentially) Windows are placed from left to right or right to left Windows are placed from top to bottom or bottom to top Why is the algorithm a problem? It needs to operate to the deadlines of a real time thread in an audio application. At this moment I am only concerned with getting a fast algorithm, don't concern yourself over the implications of real time threads and all the hurdles in programming that that brings. So far I have two choices which I have built loose prototypes for: 1) A port of the Fluxbox placement algorithm into my code. The problem with this is, the client (my program) gets kicked out of the audio server (JACK) when I try placing the worst case scenario of 256 blocks using the algorithm. This algorithm performs over 14000 full (linear) scans of the list of blocks already placed when placing the 256th window. 2) My alternative approach. Only partially implemented, this approach uses a data structure for each area of rectangular free unused space (the list of windows can be entirely separate, and is not required for testing of this algorithm). The data structure acts as a node in a doubly linked list (with sorted insertion), as well as containing the coordinates of the top-left corner, and the width and height. Furthermore, each block data structure also contains four links which connect to each immediately adjacent (touching) block on each of the four sides. IMPORTANT RULE: Each block may only touch with one block per side. The problem with this approach is, it's very complex. I have implemented the straightforward cases where 1) space is removed from one corner of a block, 2) splitting neighbouring blocks so that the IMPORTANT RULE is adhered to. The less straightforward case, where the space to be removed can only be found within a column or row of boxes, is only partially implemented - if one of the blocks to be removed is an exact fit for width (ie column) or height (ie row) then problems occur. And don't even mention the fact this only checks columns one box wide, and rows one box tall. I've implemented this algorithm in C - the language I am using for this project (I've not used C++ for a few years and am uncomfortable using it after having focused all my attention to C development, it's a hobby). The implementation is 700+ lines of code (including plenty of blank lines, brace lines, comments etc). The implementation only works for the horizontal-rows + left-right + top-bottom placement strategy. So I've either got to add some way of making this +700 lines of code work for the other 7 placement strategy options, or I'm going to have to duplicate those +700 lines of code for the other seven options. Neither of these is attractive, the first, because the existing code is complex enough, the second, because of bloat. The algorithm is not even at a stage where I can use it in the real time worst case scenario, because of missing functionality, so I still don't know if it actually performs better or worse than the first approach. What else is there? I've skimmed over and discounted: Bin Packing algorithms: their emphasis on optimal fit does not match the requirements of this algorithm. Recursive Bisection Placement algorithms: sounds promising, but these are for circuit design. Their emphasis is optimal wire length. Both of these, especially the latter, all elements to be placed/packs are known before the algorithm begins. I need an algorithm which works accumulatively with what it is given to do when it is told to do it. What are your thoughts on this? How would you approach it? What other algorithms should I look at? Or even what concepts should I research seeing as I've not studied computer science/software engineering? Please ask questions in comments if further information is needed. [edit] If it makes any difference, the units for the coordinates will not be pixels. The units are unimportant, but the grid where windows/blocks/whatever can be placed will be 127 x 127 units.

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• display next records by pressing next

  - by trans

  How to get next records each time user clicks on next button, using servlets?

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• Populate InfoPath Combo Box

  - by fwm

  I am trying to populate a drop down and found this page, which provides part of the solution: http://www.bizsupportonline.net/infopath2007/programmatically-fill-populate-drop-down-list-box-infopath-2007.htm I got this to work, but if players.xml was changed, the drop down list didn't reflect it. I had to rename the file and add the new file as my secondary data source to see the change. For my purposes, the xml file that is used to populate the drop down box would need to be created anew. Each time the form is loaded, I programatically create a new xml file, but the drop down doesn't pick up the new file, even though I have named it as the secondary data source. It seems that once you set a file to be your secondary data source, it takes a snapshot of that file at the time the source was added as a secondary data source and if you change the file, you must rename and add it as your secondary source. How do I populate a drop down box from an XML file such that if the XML file changes, the contents of the drop down change accordingly?

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• How to set WCF threads to schedual differently

  - by Gilad

  Hi, I'm running a winservice that has 2 main objectives. Execute/Handle exposed webmethods. Run Inner processes that consume allot of CPU. The problem is that when I execute many inner processes |(as tasks) that are queued to the threadpool or taskpool, the execution of the webmethods takes much more time as WCF also queues its executions to the same threadpool. This even happens when setting the inner processes task priority to lowest and setting the webmethods thread priority to heights. I hoped that Framework 4.0 would improve this, and they have, but still it takes quite allot of time for the system to handle the WCF queued tasks if the CPU is handling other inner tasks. Is it possible to change the Threadpool that WCF uses to a different one? Is it possible to manually change the task queue (global task queue, local task queue). Is it possible to manually handle 2 task queues that behave differently ? Any help in the subject would be appropriated. Gilad.

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• The advantages and disadvantages of using ORM

  - by JHarley1

  Good Morning, I would like to discuss today the advantages and disadvantages of using ORM (such as ADO.NET). Advantages: Speeds-up Development - eliminates the need for repetitive SQL code. Reduces Development Time. Reduces Development Costs. Overcomes vendor specific SQL differences - the ORM knows how to write vendor specific SQL so you don't have to. Disadvantages: Loss in developer productivity whilst they learn to program with ORM. Developers loose understanding of what the code is actually doing - the developer is more in control using SQL. ORM has a tendency to be slow. ORM fail to compete against SQL queries for complex queries. In summary, I believe that the disadvantages of using an ORM (mainly the reduced time taken to perform repetitive tasks) is far outweighed by the disadvantages of ORM e.g. its difficulty to get to grips with. Can people point out were I am going wrong and suggest any further advantages/disadvantages. Many Thanks, J

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• Access USB devices through Delphi in Windows XP standard

  - by Lex Dean

  I have been studding this subject big time and got some code together big time Do not go near Jan Axelson's Lakeview Research its crap I'm telling you I found a jedi project not completed on the INtel web site that was a lot better. and much reading has opened doors to me I'm in desperate need for a registry reader that reads with out using TRegistry or the windows.pas call to find a registry key because this XP(+) call has a windows bug when calling HKEY_LOCAL_MACHINE root directory I'm using Delphi 4 that also does not have TBrkApart object if I had that object I can make my own registry access object or some one may know of an object Can any Some one one help please J Lex Dean email:- lexdeanair at hotmail.com

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• UNIX Timestamp to MySQL DATETIME

  - by Henk Denneboom

  Hi all, I have a table with statistics and a field named time with Unix Timestamps. There are about 200 rows in the table, but I would like to change the Unix timestamps to MySQL DATETIME. Without losing the current rows. What would be the best way to update the Unix Timestamp to MySQL's DATETIME? The current table: CREATE TABLE `stats` ( `id` int(11) unsigned NOT NULL auto_increment, `time` int(11) NOT NULL, `domain` varchar(40) NOT NULL, `ip` varchar(20) NOT NULL, `user_agent` varchar(255) NOT NULL, `domain_id` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 So the time (INT) should be a DATETIME field. Thanks in advance!

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• What does this function definition mean in perl?

  - by Neeraj

  I have been doing perl from some time but today i came across this code: sub function1($$) { //snip } what does this mean in perl?

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• Change color of text within a WinForms RichTextBox

  - by Addie

  I have a RichTextBox that I write a string to every time I click a Form button. The string ends with a newline so each time I add a string, it appends to the bottom of the RichTextBox. Each string begins with the string "Long" or "Short" and ends with Environment.NewLine. I'd like to color each line red if it beings with "Long" and blue if it begins with "Short". How can I do this? If you need further clarification of the question comment below.

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• Run a PHP-script from a PHP-script without blocking

  - by Nicklas Ansman

  I'm building a spider which will traverse various sites and data mining them. Since I need to get each page separately this could take a VERY long time (maybe 100 pages). I've already set the set_time_limit to be 2 minutes per page but it seems like apache will kill the script after 5 minutes no matter. This isn't usually a problem since this will run from cron or something similar which does not have this time limit. However I would also like the admins to be able to start a fetch manually via a HTTP-interface. It is not important that apache is kept alive for the full duration, I'm, going to use AJAX to trigger a fetch and check back once in a while with AJAX. My problem is how to start the fetch from within a PHP-script without the fetch being terminated when the script calling it dies. Maybe I could use system('script.php &') but I'm not sure it will do the trick. Any other ideas?

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• How to Implement Loose Coupling with a SOA Architecture

  - by Brian

  I've been doing a lot of research lately about SOA and ESB's etc. I'm working on redesigning some legacy systems at work now and would like to build it with more of a SOA architecture than it currently has. We use these services in about 5 of our websites and one of the biggest problems we have right now with our legacy system is that almost all the time when we make bug fixes or updates we need to re-deploy our 5 websites which can be a quite time consuming process. My goal is to make the interfaces between services loosely coupled so that changes can be made without having to re-deploy all the dependent services and websites. I need the ability to extend an already existing service interface without breaking or updating any of its dependencies. Have any of you encountered this problem before? How did you solve it?

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• Windows 7 explorer always crashes, opens small "Personalized Settings" window

  - by Ian Sellar

  My Windows 7 desktop PC, built by me, started acting very weird in the last couple of days. I use it quite often, about half of the time through TeamViewer. Explorer would crash and restart randomly, almost always through TeamViewer. This made me suspect that TeamViewer was the problem but I have reproduced it with and without TeamViewer several times. The only way I can seem to get the problem not to occur is by booting into Safe Mode. I have used CCleaner and Malwarebytes to make sure it wasn't a registry error or malware causing the problem, and I have tried the fix in the seemly related issue here as well every other fix I have found online including removing security updates KB980408 and KB2926765 as well as using "sfc /scannow" and a bunch of other things I can't remember. More recently when I try to start explorer it is popping up a small window that says "Personalized Settings" on the top, but is completely empty and crashes instantly. The only way I can get it to disappear is to kill the explorer.exe process. I wish I could take a screenshot but I can't seem to open paint or even find the exe. I have tried restarting it, I have tried starting it while the personalized settings window was open. I have come up with two lists of processes the first is the list of active processes when I boot into safe mode and explorer seems to work fine. The second is the list of processes that I can narrow it down to in normal boot and still replicate the problem. There is one process that I can't seem to close. NisSrv.exe which is describes as "Microsoft Network Realtime Inspection Service". When I try to close the process NisSrv.exe it says "The operation could not be completed. Access is denied." When I try to close the related service it gives the same message. Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ System Idle Process 0 Services 0 24 K System 4 Services 0 2,660 K smss.exe 304 Services 0 1,196 K csrss.exe 408 Services 0 4,156 K wininit.exe 444 Services 0 4,608 K csrss.exe 452 Console 1 8,700 K services.exe 492 Services 0 7,700 K winlogon.exe 524 Console 1 5,756 K lsass.exe 536 Services 0 10,644 K lsm.exe 544 Services 0 4,316 K svchost.exe 652 Services 0 8,976 K MsMpEng.exe 804 Services 0 40,696 K explorer.exe 1332 Console 1 85,220 K ctfmon.exe 1376 Console 1 3,680 K dllhost.exe 1624 Console 1 8,656 K chrome.exe 1408 Console 1 98,504 K WmiPrvSE.exe 2352 Services 0 6,472 K chrome.exe 1744 Console 1 65,116 K taskmgr.exe 372 Console 1 14,948 K cmd.exe 2776 Console 1 2,960 K conhost.exe 1816 Console 1 3,580 K tasklist.exe 2308 Console 1 5,868 K And the list of processes I have narrowed it down to. Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ System Idle Process 0 Services 0 24 K System 4 Services 0 2,808 K smss.exe 316 Services 0 1,216 K csrss.exe 484 Services 0 4,532 K wininit.exe 596 Services 0 4,604 K csrss.exe 604 Console 1 23,676 K services.exe 652 Services 0 11,344 K lsass.exe 668 Services 0 12,692 K lsm.exe 676 Services 0 4,464 K MsMpEng.exe 972 Services 0 68,436 K winlogon.exe 168 Console 1 7,784 K svchost.exe 496 Services 0 19,140 K NisSrv.exe 3176 Services 0 808 K svchost.exe 1684 Services 0 11,260 K taskmgr.exe 4524 Console 1 20,696 K cmd.exe 4764 Console 1 7,224 K conhost.exe 4772 Console 1 6,916 K sublime_text.exe 2340 Console 1 45,012 K dllhost.exe 4476 Console 1 8,736 K tasklist.exe 3796 Console 1 5,768 K WmiPrvSE.exe 1768 Services 0 6,344 K Here is the event data xml from event viewer for the error I am getting. <EventData> <Data>explorer.exe</Data> <Data>6.1.7601.17567</Data> <Data>4d672ee4</Data> <Data>vrfcore.dll</Data> <Data>6.3.9600.16384</Data> <Data>5215f8f5</Data> <Data>80000003</Data> <Data>0000000000003a00</Data> <Data>12e4</Data> <Data>01cfb84fa70f89dc</Data> <Data>C:\Windows\system32\explorer.exe</Data> <Data>C:\Windows\SYSTEM32\vrfcore.dll</Data> <Data>e5957093-2442-11e4-9f8a-94de806ed9cb</Data> </EventData> I was looking through the eventvwr log again and I found this, possibly related <EventData> <Data>runonce.exe</Data> <Data>6.1.7601.17514</Data> <Data>4ce7a253</Data> <Data>MSVCR100.dll</Data> <Data>10.0.40219.325</Data> <Data>4df2bcac</Data> <Data>c0000005</Data> <Data>000000000003c145</Data> <Data>670</Data> <Data>01cfb8dabbd85942</Data> <Data>C:\Windows\system32\runonce.exe</Data> <Data>C:\Windows\system32\MSVCR100.dll</Data> <Data>fa6f82b9-24cd-11e4-80a8-94de806ed9cb</Data> </EventData> And the general error details Faulting application name: Explorer.EXE, version: 6.1.7601.17567, time stamp: 0x4d672ee4 Faulting module name: vrfcore.dll, version: 6.3.9600.16384, time stamp: 0x5215f8f5 Exception code: 0x80000003 Fault offset: 0x0000000000003a00 Faulting process id: 0xc38 Faulting application start time: 0x01cfb84e5e852c5f Faulting application path: C:\Windows\Explorer.EXE Faulting module path: C:\Windows\SYSTEM32\vrfcore.dll Report Id: 9dc19e6d-2441-11e4-9f8a-94de806ed9cb Another probably unrelated error that I seem to be getting pretty often. Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected. My explorer tab in Autoruns seen below along with the error when I try to uncheck something. I should add that I seem to be able to disable shell extensions with ShellExView but I still can't get explorer to start correctly. EXPLORER SHELL UPDATE - See screenshot below I can access the explorer right click menu through a file manager I downloaded called NexusFile, but still no luck starting explorer. Another round of errors that I am getting regarding Windows Search Service The search service has detected corrupted data files in the index {id=4700}. The service will attempt to automatically correct this problem by rebuilding the index. Details: The content index catalog is corrupt. (HRESULT : 0xc0041801) (0xc0041801) followed by The Windows Search Service is being stopped because there is a problem with the indexer: The catalog is corrupt. Details: The content index catalog is corrupt. (HRESULT : 0xc0041801) (0xc0041801 and The plug-in in <Search.JetPropStore> cannot be initialized. Context: Windows Application, SystemIndex Catalog Details: The content index catalog is corrupt. (HRESULT : 0xc0041801) (0xc0041801) and The gatherer object cannot be initialized. Context: Windows Application, SystemIndex Catalog Details: The content index catalog is corrupt. (HRESULT : 0xc0041801) (0xc0041801) and The Windows Search Service cannot load the property store information. Context: Windows Application, SystemIndex Catalog Details: The content index database is corrupt. (HRESULT : 0xc0041800) (0xc0041800) WER Log http://pastebin.com/WXKGDT4Q I'll add information as I remember it or people request it.

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• MySQL Student database beginner SQL employment expectations

  - by sammysmall

  Background, Student pursuing BSIT degree, employer expectations, entry level. I would like to solicit opinions from this forum as to what your professional expectations are as regards an entry level position in working in the database realm... I see many job opportunities that require a minimum of 2 or more years experience, how does one go about obtaining this experience (I have tried very hard to maintain a minimum 3.70+ GPA) but have ZERO work experience in this field... I spend non school time working in VB and SQL to try and increase my proficiency. I have considered postponing my job search until I obtain certifications from brainbench etc... Any criticism and or advise is welcomed... Again I have no experience in database other than undergrad work in class. Thank you for your time sammysmall

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• why does python.subprocess hang after proc.communicate()?

  - by ccfenix

  I've got an interactive program called my_own_exe. First, it prints out alive, then you input S\n and then it prints out alive again. Finally you input L\n. It does some processing and exits. However, when I call it from the following python script, the program seemed to hang after printing out the first 'alive'. Can anyone here tell me why this is happening? Thanks proc2 = subprocess.Popen("my_own_exe", shell=True , stdin=subprocess.PIPE, stdout=subprocess.PIPE) print proc2.communicate()[0] time.sleep(2); print "alive" # 'hang' after print this line proc2.communicate('S\n')[0] print "alive" print proc2.communicate()[0] time.sleep(6)

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• How to make a reference to a normal java class from GWT server side

  - by mohammed-qumhieh

  hello I building my project using GWT plugin for eclipse Galileo, after i done from RPC between the server and client, i trying to make a reference from gwt server side to normal java class in non-gwt-project, but every time i make an object from the class (which in non-gwt-project) gives me ClassNotFoundException. i did the buildpath for the gwt project, but still gives me the same exception, is there a way to make that from server side (not from client side). i need help please, i spent a lot of time searching for solution but i did not found anything. i appreciate any suggestions...thanks

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• scvmap, disco, xsd, wsdl, svcinfo and datasource files

  - by David Gray Wright

  We have a WEb Service named, let's say Foo. So there is a Foo.svc file and a code behind Foo.svc.cs. We add a silverlight project and wish to use the Foo.svc services so we add a Service Reference and call it's namespace FooBar. This creates the following files : Reference.cs Reference.svcmap Foo.xsd Foo.disco configuration.svcinfo Foo.wsdl Also various *.datasource files. Over time we update the Foo.svc and add more Web Services (methods and interfaces) and the number of files in the FooBar directory is growing. I have 26 Foo(nn).xsd files in this directory - where nn = 1 to 26. My configuration.svcinfo is upto configuration91.svcinfo. My question is this? Do any of these files need to be version controlled? Can they all be deleted each time you do a build \ deploy (as long as you do an update service reference)?

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• What makes good software good?

  - by Jonta

  People probably have a lot of different answers here, like good...: scalability, speed, usability, stability, consistency, completeness, absence of bugs, accessibility, documentation, code-quality and so on. There are a lot of philosophies on development of software. Like the UNIX-philosophy. Often vague and not easy to understand. I am looking for statements such as the one cited below. Which you can ask about the software when it's in the design-stage, is ready to be coded, and has been coded and is ready for launch. The software I am talking about, is of course the software made for the end-user. Ken Rockwell wrote: "I expect that it will let me get more accomplished in less time." (Here one could ask "will this let me get more accomplished in less time?")

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• Java - Difference between SwingWorker and SwingUtilities.invokeLater()

  - by Yatendra Goel

  SwingWorker is used for the following purposes: For running long-running tasks in a different thread so as to prevent the GUI from being unresponsive For updating GUI with the results produced by the long-running task at the end of the task through done() method. For updating GUI from time to time with the intermediate results produced and published by the task with the help of publish() and process() methods. SwingUtilities.invokeLater() can perform the above tasks as follows: Instead of executing SwingWorker.execute() method from the EDT, we can execute ExecutorService.submit(new MyRunnable()) as it will also create another thread which can execute long-running task. For updating GUI at the end of the task, we can put code (written in done() method of case1) SwingUtilites.invokeLater(new RunnableToExecuteDoneMethodCode()) at the end of the task. For updating GUI in the middle of the task, we can put code (written in process() method of case1) SwingUtilites.invokeLater(new RunnableToExecuteProcessMethodCode()) at the place where we called publish() method in case1. I am asking this question because the problem specified in question http://stackoverflow.com/questions/2797483/java-swingworker-can-we-call-one-swingworker-from-other-swingworker-instead-o/2824306#2824306 can be solved by SwingUtilities.invokeLater() but can't be solved with SwingWorker

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