Search Results

Search found 15300 results on 612 pages for 'programming languages'.

Page 575/612 | < Previous Page | 571 572 573 574 575 576 577 578 579 580 581 582  | Next Page >

• Installing Cygwin C and C++ compilers for NetBeans IDE 7.2

  - by user1294663

  I am very new to Cygwin, C, C++ and NetBeans IDE 7.2. My PC is running MICROSOFT WINDOWS 7 OS. I have read the documentation on how to install the Cygwin C C++ compilers. http://netbeans.org/community/releases/72/cpp-setup-instructions.html#compilers I have tried to run Cygwin setup.exe that has the most recent version of the Cygwin DLL is 1.7.16-1. I am not very sure which exact package to install when the Cygwin setup.exe installer prompted for the selection of packages to download and install. I want to install the Cygwin C and C++ compilers so that i can create C and C++ projects using NetBeans 7.2 I selected those packages that has contains the following names gcc, g++, gdb and make. Then i proceed on to install the selected packages The installation took up a long time so i stopped after about 45 minutes or so. I browsed the installation folder and i saw some packages i selected were installed. I noticed that some packages came in some sort of "zip" file with tar.gz extension. i added the folder path into the PATH variable in the windows 7 environment variables window. I think this command works C: cygcheck -c cygwin but the rest doesn't work i think. C: gcc --version C: g++ --version C: make --version C: gdb --version I tried to create the C C++ project using the Netbeans IDE 7.2 and the IDE pops out a dialog message saying that there was no c c++ compilers found. Have i made some mistake here? like installing the wrong packages or something else??? Are there packages shown in the Cygwin setup.exe installer that contains exact names and exact version that is compatible with NetBeans IDE 7.2?? This i am not too sure. Because i i think i didn't really see some required packages with exact names and versions. My question is : Which exact packages do i install using the Cygwin setup.exe installer so that i can create C & C++ projects using Netbeans IDE 7.2? and what other steps do i have to take note to ensure complete successful installation? do i have to wait all the selected required packages to be installed? I WOULD LIKE TO KNOW THE EXACT NAMES AND THE VERSIONS FOR THE REQUIRED PACKAGES (NAMES AND VERSIONS DISPLAYED IN THE CYGWIN SETUP.EXE INSTALLER WHEN PROMPTED) NEEEDED FOR C & C++ PROGRAMMING USING NETBEANS IDE 7.2??

  Read the article

• Workaround with paths in vista

  - by Argiropoulos Stavros

  Not really a programming question but i think quite relative. I have a .exe running in my windows XP PC. This exe needs a file in the same directory to run and has no problem finding it in XP BUT in Vista(I tried this in several machines and works in some of them) fails to run. I'm guessing there is a problem finding the path.The program is written in basic(Yes i know..) I attach the code below. Can you think of any workarounds? Thank you The exe is located in c:\tools Also the program runs in windows console(It starts but then during the execution cannot find a custom file type .TOP made by the creator of the program) ' PROGRAMM TOP11.BAS DEFDBL A-Z CLS LOCATE 1, 1 COLOR 14, 1 FOR i = 1 TO 80 PRINT "±"; NEXT i LOCATE 1, 35: PRINT "?? TOP11 ??" PRINT " €€‚—‚„‘ ’— ‹„’†‘„— ‘’† „”€„€ ’†‘ ‡€€‘‘†‘ ‰€ † „.‚.‘.€. " COLOR 7, 0 PRINT "-------------------------------------------------------------------------------" PRINT INPUT "ƒ?©« «¦¤ ©¬¤«?©«? ¤???... : ", Factor# INPUT "¤¦£ ¨®e¦¬ [.TOP] : ", topfile$ VIEW PRINT 7 TO 25 file1$ = topfile$ + ".TOP" file2$ = topfile$ + ".T_P" file3$ = "Syntel" OPEN file3$ FOR OUTPUT AS #3 PRINT #3, " ‘¬¤«?©«?? ¤??? = " + STR$(Factor#) + " †‹„‹†€: " + DATE$ CLOSE #3 command1$ = "copy" + " " + file1$ + " " + file2$ SHELL command1$ '’¦ ¨®e¦ .TOP ¤« ¨a­«  £ «¤ ?«a?¥ .T_P OPEN file2$ FOR INPUT AS #1 OPEN file1$ FOR OUTPUT AS #2 bb$ = " \\\ \ , ###.#### ###.#### ####.### ##.### " DO LINE INPUT #1, Line$ Line$ = RTRIM$(LTRIM$(Line$)) icode$ = LEFT$(Line$, 1) IF icode$ = "1" THEN Line$ = " " + Line$ PRINT #2, Line$ PRINT Line$ ELSEIF icode$ = "2" THEN Line$ = " " + Line$ PRINT #2, Line$ PRINT Line$ ELSEIF icode$ = "3" THEN Number$ = MID$(Line$, 3, 6) Hangle = VAL(MID$(Line$, 14, 9)) Zangle = VAL(MID$(Line$, 25, 9)) Distance = VAL(MID$(Line$, 36, 9)) Distance = Distance * Factor# Height = VAL(MID$(Line$, 48, 6)) PRINT #2, USING bb$; icode$; Number$; Hangle; Zangle; Distance; Height PRINT USING bb$; icode$; Number$; Hangle; Zangle; Distance; Height ELSE END IF LOOP UNTIL EOF(1) VIEW PRINT CLS LOCATE 1, 1 PRINT " *** ’„‘ ’“ ‚€‹‹€’‘ *** " END

  Read the article

• Legacy VB6 application under Win7 SQL error

  - by Shial

  We have a rather unfortunate legacy application at work, written originally in VB6 it predates anybody in our IT department by at least 5 years. We have a contracted developer for ongoing maintenance and where he can he rewrites sections over into .NET code (Not sure about his techniques here, this is a side job for his regular work as an IBM engineer) the application works fine (such as it is) under windows XP. We have only a couple of Windows 7 machines mainly for testing and this application seems to run into a wall. Things like the background not loading and SQL errors. This is even running under administrator. Running an SQL trace from the ODBC control panel shows several interesting things. It makes a connection to the database successfully initially where it runs a query to determine if it is running the correct version. This query works fine. 558-1af0 ENTER SQLExecDirectW HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 BMS 558-1af0 EXIT SQLExecDirectW with return code 1 (SQL_SUCCESS_WITH_INFO) HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 It then seems to drop its connection and can't find the ODBC connection despite the fact its connecting to the same DB. From the trace it looks like it configures the connection then it starts firing off SQLFreeStmt to unbind and close out then when in the application and it tries to do its thing there is no connection. 558-1af0 ENTER SQLFreeStmt HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> BMS 558-1af0 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS) HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> Then this happens when I try to do something that pulls data 558-1af0 ENTER SQLDriverConnectW HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> BMS 558-1af0 EXIT SQLDriverConnectW with return code -1 (SQL_ERROR) HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> DIAG [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) Nearly all of my searching on this issue comes up with programming issues where the connection string has a problem. The only thing that is different in this particular scenario though is Windows 7, I know the connection string is fine since it works on the XP machines. The VB components are supposed to be still functional under Win7. My computer is running 32 bit win7 and my VP is running Win7 64 bit and both have the same problem so that can be ruled out. I have already tried reinstalling the SQL Native Client and the VB runtime as well as the application in question. Hopefully I can find a solution and not have to resort to using the XP VM.

  Read the article

• Media Archive System with branches?

  - by Ian McEwen

  In short, how can I get VCS features (revisioning, branching, and deduplication) for a media collection that's far too large for most/all VCS systems? Background I have a 300GB music folder; unfortunately, I only have the hard drive space for this on my desktop system. However, a good portion of my collection is FLAC; therefore, I could theoretically have a space-optimized version in which I transcode all the FLAC to mp3 or some other lossy format, and use only that version on the laptop. However, a portion of my collection isn't FLAC. And that which isn't FLAC shouldn't be transcoded to an equivalent format; it won't have any space savings, which is the point. Moreover, it shouldn't be duplicated: the mp3/ogg portions of the collection should probably be exactly the same files. Thoughts One solution is to have format-specific organization of my music folders, and use some script to transcode the FLAC directory to mp3 or such into another directory. Another is some sort of hack using entirely separate copies and symbolic links for deduplication, or something similar. But these also have a disadvantage of lacking versioning; I'd like to be able to reorganize my music collection, retag things, etc. and save history. This isn't key, but would be awfully nice. I can't see it as entirely unreasonable to set up VCS hooks or something equivalent to keep directory structure synced between two copies, update tags, and transcode FLAC automatically into the space-optimized copy. Basically, the system I really want is a version control system. Two branches: one archival/desktop branch including the FLAC, one space-optimized/laptop branch without it; most VCSes would deal well with whole chunks being the same files well by compressing in a reasonable way (i.e. don't keep two copies of the same data). I could also do a lot of what I talk about above with hooks. But I don't know of any VCS that would deal with a 300GB repository with almost 20k files. Many of them would just not even initialize the whole affair; others would just do it inexpressibly slowly or otherwise badly. checkpoint looks like it's designed for something close (it's at least for media), but wouldn't do deduplication well (and I'm not convinced I'd be able to script it to do things like automatic transcoding and directory-structure syncing). So. Is there anything out there that can do all this, or should I consider it a programming project?

  Read the article

• How to change the language of driver interface for Canon Pixma printers?

  - by Sammy

  Is there a way to change the language of the driver interface for Canon Pixma printers? Which language is used seems to be determined by the language of the OS or the Windows localization settings. I really don't want that, I want to be able to set the language manually to my own liking, either during the driver installation or afterwards. I have found a workaround for Pixma IP2770 where you edit the setup.ini file by replacing the language names and the DLL search paths with <SELECT> under the LANGUAGES section. So instead of... 0000=<SELECT> 0001=Arabic,RES\STRING\IJInstAR.ini,RES\DLL\IJInstAR.dll 0804=Simplified Chinese,RES\STRING\IJInstCN.ini,RES\DLL\IJInstCN.dll 0404=Traditional Chinese,RES\STRING\IJInstTW.ini,RES\DLL\IJInstTW.dll 0005=Czech,RES\STRING\IJInstCZ.ini,RES\DLL\IJInstCZ.dll 0006=Danish,RES\STRING\IJInstDK.ini,RES\DLL\IJInstDK.dll 0007=German,RES\STRING\IJInstDE.ini,RES\DLL\IJInstDE.dll 0008=Greek,RES\STRING\IJInstGR.ini,RES\DLL\IJInstGR.dll 0009=English,RES\STRING\IJInstUS.ini,RES\DLL\IJInstUS.dll 000A=Spanish,RES\STRING\IJInstES.ini,RES\DLL\IJInstES.dll 000B=Finnish,RES\STRING\IJInstFI.ini,RES\DLL\IJInstFI.dll 000C=French,RES\STRING\IJInstFR.ini,RES\DLL\IJInstFR.dll 000E=Hungarian,RES\STRING\IJInstHU.ini,RES\DLL\IJInstHU.dll 0010=Italian,RES\STRING\IJInstIT.ini,RES\DLL\IJInstIT.dll 0011=Japanese,RES\STRING\IJInstJP.ini,RES\DLL\IJInstJP.dll 0012=Korean,RES\STRING\IJInstKR.ini,RES\DLL\IJInstKR.dll 0013=Dutch,RES\STRING\IJInstNL.ini,RES\DLL\IJInstNL.dll 0014=Norwegian,RES\STRING\IJInstNO.ini,RES\DLL\IJInstNO.dll 0015=Polish,RES\STRING\IJInstPL.ini,RES\DLL\IJInstPL.dll 0016=Portuguese,RES\STRING\IJInstPT.ini,RES\DLL\IJInstPT.dll 0019=Russian,RES\STRING\IJInstRU.ini,RES\DLL\IJInstRU.dll 001D=Swedish,RES\STRING\IJInstSE.ini,RES\DLL\IJInstSE.dll 001E=Thai,RES\STRING\IJInstTH.ini,RES\DLL\IJInstTH.dll 001F=Turkish,RES\STRING\IJInstTR.ini,RES\DLL\IJInstTR.dll 0021=Indonesian,RES\STRING\IJInstID.ini,RES\DLL\IJInstID.dll You get.... 0000=<SELECT> 0001=<SELECT> 0804=<SELECT> 0404=<SELECT> 0005=<SELECT> 0006=<SELECT> 0007=<SELECT> 0008=<SELECT> 0009=English,RES\STRING\IJInstUS.ini,RES\DLL\IJInstUS.dll 000A=<SELECT> 000B=<SELECT> 000C=<SELECT> 000E=<SELECT> 0010=<SELECT> 0011=<SELECT> 0012=<SELECT> 0013=<SELECT> 0014=<SELECT> 0015=<SELECT> 0016=<SELECT> 0019=<SELECT> 001D=<SELECT> 001E=<SELECT> 001F=<SELECT> 0021=<SELECT> .... in case English is the preferred language. It's a way to force the installation program to only install the English language support. IP2770 is a model for the Asian market, so if you want to check this out you need to go to the Canon India download page (for instance) to get the driver. Unfortunately this method is not possible with my IP4000. There is no driver even available for it to download for Windows Vista. But is there really no way of changing the language of the UI in any normal way, you know... without having to hack it? Besides, the driver for my printer comes with Windows Vista, so I don't even have to install any drivers. And little do I get the chance to set the language, knowing that the installation never happens. Any ideas?...

  Read the article

• Problem with several USB devices on Windows XP. How to diagnose USB device?

  - by Lukasz Baran

  Hello All, Recently I've bought some electronic devices (like e.g. Sony Ebook reader PRS-600 or HP PDA IPaq) which are connected to PC using USB ports. These devices have own batteries and they are recharged using USB. However, I am experiencing a problem with Ebook Reader and the similiar thing happens with my PDA (but in this case it's more rare). Sometimes, I am unable to make it start recharging, when it's connected to USB port. The LCD diode on my Reader lights up and the icon in the system tray appears. They both indicate that the device has been connected. However, the device should start recharching and it should appear on Windows XP as a 'explorable' device (just like pendrive it offers some HDDs). None of these happens:( This problem appears on two PCs - desktop and laptop. Both have Windows XP SP3 installed. And what's interesting and surprising to me is the fact that these devices sometimes work without any problems. I mean, I just plug them in and they work properly. Besides that, there are some computers (I have tested a variety of possible conditions) on which the problem does not appear! I am confused and, on the other hand, determined to find out what is the real cause of such strange behavior. Maybe I'm wrong but I always assumed that I'm using deterministic machines, but the described situation makes me feel like I was dreaming:) And that's why I'm asking you here. Are there any tools that could help me diagnose USB ports? Or maybe anyone knows the solution? I have a lot experience with low level programming (mostly from the times of MS-DOS applications), but I'm not an expert when it comes to WinXP technology. If this was a problem with network connection, I would know what to do - I know how to track network traffic, but with USB ports I feel powerless. I have a feeling that the problem may lie in a way WinXP handles USB devices. Personally, I hate auto-discovery and P'n'P features available in Windows. I know that some of may suggest to move to Linux or other *Nix system. Unfortunately, I have to use WinXP in my professional life, so it's rather impossible. Besides that, I don't consider XP as a total disaster. Any help from you will be appreciated!

  Read the article

• What are the most likely bottlenecks determining the performance of CamStudio screen recording?

  - by Steve314

  When doing screen recording, I can get a frame rate of maybe 15 frames per second for the full screen on my 1080p monitor using the XVID codec. I can increase the speed a bit by recording a region, changing screen modes, and tweaking other settings, but I'm curious what hardware upgrades might give me the biggest bang for my buck. My PC is budget, but modern... Athlon 2 X4 645 (3.1GHz, quad core, limited cache) processor. 4GB single channel DDR3 1066 RAM. ASRock motherboard with NVidia GeForce 7025/nForce 630a Chipset. ATI Radeon HD 5450 graphics card - 512MB on board, not configured to steal system RAM. I dual-boot Windows XP and Windows 7. For the moment, XP is my bigger performance concern as it's still my getting-things-done O/S as opposed to my browser-host O/S. My goal is to make a few programming-related tutorials. For a lot of that I don't need screen recording - I can make up some slides, record audio with the PC switched off, yada yada. When I do need screen recording, I'll mostly be recording Notepad++, Visual Studio or a command prompt. Occasionally, I may be recording some kind of graphics or diagram program and using my pre-Bamboo cheap Wacom tablet - I have the CS2 versions of Photoshop and Illustrator, but I'd much more likely be using Microsoft Paint. Basically, what I'll be recording won't be making huge demands on the machine - but recording a fair number of pixels (720p preferred) will be useful. What's particularly wierd - not so long ago I still had a five-year-old Pentium 4 based PC. And (with the same 1080p monitor) it could record at not far from the same frame rate. So clearly the performance issues are more subtle than just throw-money-at-it. My first guess would be that the main bottleneck is the bandwidth for transferring data to/from the graphics card. Is that likely to be correct? In support of that, see this [Radeon HD 5450 review][1] - the memory bandwidth is only 12.8 GB/s. If you can't get data out of graphics memory quickly, you can't transfer it back to the system memory quickly. Apparently, that's slower than some top-end cards in 2002.

  Read the article

• cakephp & nginx config/rewrite rules

  - by seanl

  Hi somebody please help me out, I've asked this at stackoverflow as well but not got much of a response and was debating whether it was programming or server related. I’m trying to setup a cakephp environment on a Centos server running Nginx with Fact CGI. I already have a wordpress site running on the server and a phpmyadmin site so I have PHP configured correctly. My problem is that I cannot get the rewrite rules setup correct in my vhost so that cake renders pages correctly i.e. with styling and so on. I’ve googled as much as possible and the main consensus from the sites like the one listed below is that I need to have the following rewrite rule in place location / { root /var/www/sites/somedomain.com/current; index index.php index.html; # If the file exists as a static file serve it # directly without running all # the other rewrite tests on it if (-f $request_filename) { break; } if (!-f $request_filename) { rewrite ^/(.+)$ /index.php?url=$1 last; break; } } http://blog.getintheloop.eu/2008/4/17/nginx-engine-x-rewrite-rules-for-cakephp problem is these rewrite assume you run cake directly out of the webroot which is not what I want to do. I have a standard setup for each site i.e. one folder per site containing the following folders log, backup, private and public. Public being where nginx is looking for its files to serve but I have cake installed in private with a symlink in public linking back to /private/cake/ this is my vhost server { listen 80; server_name app.domain.com; access_log /home/public_html/app.domain.com/log/access.log; error_log /home/public_html/app.domain.com/log/error.log; #configure Cake app to run in a sub-directory #Cake install is not in root, but elsewhere and configured #in APP/webroot/index.php** location /home/public_html/app.domain.com/private/cake { index index.php; if (!-e $request_filename) { rewrite ^/(.+)$ /home/public_html/app.domain.com/private/cake/$1 last; break; } } location /home/public_html/app.domain.com/private/cake/ { index index.php; if (!-e $request_filename) { rewrite ^/(.+)$ /home/public_html/app.domain.com/public/index.php?url=$1 last; break; } } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /home/public_html/app.domain.com/private/cake$fastcgi_script_name; include /etc/nginx/fastcgi_params; } } Now like I said I can see the main index.php of cake and have connected it to my DB but this page is without styling so before I proceed any further I would like to configure it correctly. What am I doing wrong………. Thanks seanl

  Read the article

• WiX unresolved reference error

  - by David

  I'm using Wix version 3.0.5419.0. I have two .wxs files, one which is a fragment, and another which uses the fragment to create the .msi file. Here is the file which uses the fragment (DaisyFarmer.wxs): <?xml version='1.0' encoding='windows-1252'?> <Wix xmlns='http://schemas.microsoft.com/wix/2006/wi' xmlns:iis='http://schemas.microsoft.com/wix/IIsExtension'> <Product Name='Daisy Web Site 1.0' Id='BB7FBBE4-0A25-4cc7-A39C-AC916B665220' UpgradeCode='8A5311DE-A125-418f-B0E1-5A30B9C667BD' Language='1033' Codepage='1252' Version='1.0.0' Manufacturer='the man'> <Package Id='5F341544-4F95-4e01-A2F8-EF74448C0D6D' Keywords='Installer' Description="desc" Manufacturer='the man' InstallerVersion='100' Languages='1033' Compressed='yes' SummaryCodepage='1252' /> <Media Id='1' Cabinet='Sample.cab' EmbedCab='yes' DiskPrompt="CD-ROM #1" /> <Property Id='DiskPrompt' Value="the man" /> <PropertyRef Id="NETFRAMEWORK35"/> <Condition Message='This setup requires the .NET Framework 3.5.'> <![CDATA[Installed OR (NETFRAMEWORK35)]]> </Condition> <Feature Id='DaisyFarmer' Title='DaisyFarmer' Level='1'> <ComponentRef Id='SchedulerComponent' /> </Feature> </Product> </Wix> The fragment I'm referencing is (Scheduler.wxs): <?xml version="1.0" encoding="utf-8"?> <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"> <Fragment> <DirectoryRef Id="TARGETDIR"> <Directory Id="dir2787390E4B7313EB8005DE08108EFEA4" Name="scheduler"> <Component Id="SchedulerComponent" Guid="{9254F7E1-DE41-4EE5-BC0F-BA668AF051CB}"> <File Id="fil9A013D0BFB837BAC71FED09C59C5501B" KeyPath="yes" Source="SourceDir\DTBookMonitor.exe" /> <File Id="fil4F0D8D05F53E6AFBDB498E7C75C2D98F" KeyPath="no" Source="SourceDir\DTBookMonitor.exe.config" /> <File Id="filF02F4686267D027CB416E044E8C8C2FA" KeyPath="no" Source="SourceDir\monitor.bat" /> <File Id="fil05B8FF38A3C85FE6C4A58CD6FDFCD2FB" KeyPath="no" Source="SourceDir\output.txt" /> <File Id="fil397F04E2527DCFDF7E8AC1DD92E48264" KeyPath="no" Source="SourceDir\pipelineOutput.txt" /> <File Id="fil83DFACFE7F661A9FF89AA17428474929" KeyPath="no" Source="SourceDir\process.bat" /> <File Id="fil2809039236E0072642C52C6A52AD6F2F" KeyPath="no" Source="SourceDir\README.txt" /> </Component> </Directory> </DirectoryRef> </Fragment> </Wix> I then run the following commands: candle -ext WixUtilExtension -ext WiXNetFxExtension DaisyFarmer.wxs Scheduler.wxs light -sice:ICE20 -ext WixUtilExtension -ext WiXNetFxExtension Scheduler.wixobj DaisyFarmer.wixobj -out DaisyFarmer.msi I'm getting an error when I run light.exe which says "DaisyFarmer.wxs(20) : error LGHT0094 : Unresolved reference to symbol 'Component:SchedulerComponent' in section 'Product:{BB7FBBE4-0A25-4CC7-A39C-AC916B665220}'." What am I missing?

  Read the article

• Log4r : logger inheritance, yaml configuration, alternatives ?

  - by devlearn

  Hello, I'm pretty new to ruby environments and I was looking for a nice logging framework to use it my ruby and rails applications. In my previous experiences I have successfully used log4j and log4p (the perl port) and was expecting the same level of usability (and maturity) with log4r. However I must say that there are a number of things that are not clear at all in the log4r framework. 1 Logger Inheritance The logger inheritance does not seem to be managed at all ! If I declare a logger named 'myapp' and then try to get a logger name 'myapp::engine', the lookup will end with a NameError. I would expect that the framework returns the root logger according to the naming scheme and to use the 'myapp' logger. Q1 : Of course I can work around this and manage the names by myself with a lookup method, however is there a cleaner way to do this without any extra coding ? 2 YAML configuration Second thing that confuses me is the yaml configuration. On the log4r site there are literally no information about this system, the doc links forward to missing pages, so all the info I can find about is contained in the examples directory of the gem. I was pretty confused with the fact that the yaml configuration must contain the pre_config section, and that I need to define my own levels. If I remove the pre_config secion, or replace all the “custom” levels by the standard ones ( debug, info, warn, fatal ) , the example will throw the following error : log4r/yamlconfigurator.rb:68:in `decode_yaml': Log level must be in 0..7 (ArgumentError) So there seems to be no way of using a simple file where we only declare the loggers and appenders for the framework. Q2 : I realy think that I missed something and that must be a way of providing a simple yaml conf file. Do you have any examples of such an usage ? 3 Variables substitution in XML file Q3 : The Yaml configuration system seems to provide such a feature however I was unable to find a similar feature with XML files. Any ideas ? 4 Alternatives ? I must say that I'm very disappointed by the feature level and the maturity of log4r compared to the log4j and other log4j ports. I run into this framework with a solid background of logging APIs in other languages and find myself working around in all kinds just to make 'basic things' running in a “real world application”. By that I mean a complex application composed of several gems, console/scripting apps, and a rails web front end where the configuration must be mutualized and where we make intensive usage of namespaces and inheritance. I've run several searches in order to find something more suitable or mature, but did not find anything similar. Q4 : Do you guys know any (serious) alternatives to log4r framework that could be used in a enterprise class app ? Thanks reading all of this ! I'd really appreciate any pointers, Kind Regards,

  Read the article

• Why is code quality not popular?

  - by Peter Kofler

  I like my code being in order, i.e. properly formatted, readable, designed, tested, checked for bugs, etc. In fact I am fanatic about it. (Maybe even more than fanatic...) But in my experience actions helping code quality are hardly implemented. (By code quality I mean the quality of the code you produce day to day. The whole topic of software quality with development processes and such is much broader and not the scope of this question.) Code quality does not seem popular. Some examples from my experience include Probably every Java developer knows JUnit, almost all languages implement xUnit frameworks, but in all companies I know, only very few proper unit tests existed (if at all). I know that it's not always possible to write unit tests due to technical limitations or pressing deadlines, but in the cases I saw, unit testing would have been an option. If a developer wanted to write some tests for his/her new code, he/she could do so. My conclusion is that developers do not want to write tests. Static code analysis is often played around in small projects, but not really used to enforce coding conventions or find possible errors in enterprise projects. Usually even compiler warnings like potential null pointer access are ignored. Conference speakers and magazines would talk a lot about EJB3.1, OSGI, Cloud and other new technologies, but hardly about new testing technologies or tools, new static code analysis approaches (e.g. SAT solving), development processes helping to maintain higher quality, how some nasty beast of legacy code was brought under test, ... (I did not attend many conferences and it propably looks different for conferences on agile topics, as unit testing and CI and such has a higer value there.) So why is code quality so unpopular/considered boring? EDIT: Thank your for your answers. Most of them concern unit testing (and has been discussed in a related question). But there are lots of other things that can be used to keep code quality high (see related question). Even if you are not able to use unit tests, you could use a daily build, add some static code analysis to your IDE or development process, try pair programming or enforce reviews of critical code.

  Read the article

• General advice and guidelines on how to properly override object.GetHashCode()

  - by Svish

  According to MSDN, a hash function must have the following properties: If two objects compare as equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare as equal, the GetHashCode methods for the two object do not have to return different values. The GetHashCode method for an object must consistently return the same hash code as long as there is no modification to the object state that determines the return value of the object's Equals method. Note that this is true only for the current execution of an application, and that a different hash code can be returned if the application is run again. For the best performance, a hash function must generate a random distribution for all input. I keep finding myself in the following scenario: I have created a class, implemented IEquatable<T> and overridden object.Equals(object). MSDN states that: Types that override Equals must also override GetHashCode ; otherwise, Hashtable might not work correctly. And then it usually stops up a bit for me. Because, how do you properly override object.GetHashCode()? Never really know where to start, and it seems to be a lot of pitfalls. Here at StackOverflow, there are quite a few questions related to GetHashCode overriding, but most of them seems to be on quite particular cases and specific issues. So, therefore I would like to get a good compilation here. An overview with general advice and guidelines. What to do, what not to do, common pitfalls, where to start, etc. I would like it to be especially directed at C#, but I would think it will work kind of the same way for other .NET languages as well(?). I think maybe the best way is to create one answer per topic with a quick and short answer first (close to one-liner if at all possible), then maybe some more information and end with related questions, discussions, blog posts, etc., if there are any. I can then create one post as the accepted answer (to get it on top) with just a "table of contents". Try to keep it short and concise. And don't just link to other questions and blog posts. Try to take the essence of them and then rather link to source (especially since the source could disappear. Also, please try to edit and improve answers instead of created lots of very similar ones. I am not a very good technical writer, but I will at least try to format answers so they look alike, create the table of contents, etc. I will also try to search up some of the related questions here at SO that answers parts of these and maybe pull out the essence of the ones I can manage. But since I am not very stable on this topic, I will try to stay away for the most part :p

  Read the article

• Importing a large dataset into a database

  - by peaceful

  I'm a beginning programmer in the relevant areas to this question, so if possible, it'd be helpful to avoid assuming I know a lot already. I'm trying to import the OpenLibrary dataset into a local Postgres database. After it's imported, I plan to use it as a starting seed for a Ruby on Rails application that will include information on books. The OpenLibrary datasets are available here, in a modified JSON format: http://openlibrary.org/dev/docs/jsondump I only need very basic information for my application, much less than what is provided in the dumps. I'm only trying to get out book titles, author names, and relationships between books and authors. Below are two typical entries from their dataset, the first for an author, and the second for a book (they seem to have an entry for each edition of a book). The entries seem to lead off with a primary key, and then with a type, before including the actual JSON database dump. /a/OL2A /type/author {"name": "U. Venkatakrishna Rao", "personal_name": "U. Venkatakrishna Rao", "last_modified": {"type": "/type/datetime", "value": "2008-09-10 08:44:01.978456"}, "key": "/a/OL2A", "birth_date": "1904", "type": {"key": "/type/author"}, "id": 99, "revision": 3} /b/OL345M /type/edition {"publishers": ["Social Science Research Project, Dept. of Geography, University of Dacca"], "pagination": "ii, 54 p.", "title": "Land use in Fayadabad area", "lccn": ["sa 65000491"], "subject_place": ["East Pakistan", "Dacca region."], "number_of_pages": 54, "languages": [{"comment": "initial import", "code": "eng", "name": "English", "key": "/l/eng"}], "lc_classifications": ["S471.P162 E23"], "publish_date": "1963", "publish_country": "pk ", "key": "/b/OL345M", "authors": [{"birth_date": "1911", "name": "Nafis Ahmad", "key": "/a/OL302A", "personal_name": "Nafis Ahmad"}], "publish_places": ["Dacca, East Pakistan"], "by_statement": "[by] Nafis Ahmad and F. Karim Khan.", "oclc_numbers": ["4671066"], "contributions": ["Khan, Fazle Karim, joint author."], "subjects": ["Land use -- East Pakistan -- Dacca region."]} The size of the uncompressed dumps are enormous, about 2GB for the authors list, and 18GB for the book editions list. OpenLibrary does not provide any tools for this themselves, they provide a simple unoptimized Python script for reading in sample data (which unlike the actual dumps comes in pure JSON format), but they estimate if that was modified for use on their actual data it would take 2 months (!) to finish loading the data. How can I read this into the database? I assume I'll need to write a program to do this. What language and any guidance on how I should do it to finish in a reasonable amount of time? The only scripting language I have any experience with is Ruby.

  Read the article

• Using Objective-C Blocks

  - by Sean

  Today I was experimenting with Objective-C's blocks so I thought I'd be clever and add to NSArray a few functional-style collection methods that I've seen in other languages: @interface NSArray (FunWithBlocks) - (NSArray *)collect:(id (^)(id obj))block; - (NSArray *)select:(BOOL (^)(id obj))block; - (NSArray *)flattenedArray; @end The collect: method takes a block which is called for each item in the array and expected to return the results of some operation using that item. The result is the collection of all of those results. (If the block returns nil, nothing is added to the result set.) The select: method will return a new array with only the items from the original that, when passed as an argument to the block, the block returned YES. And finally, the flattenedArray method iterates over the array's items. If an item is an array, it recursively calls flattenedArray on it and adds the results to the result set. If the item isn't an array, it adds the item to the result set. The result set is returned when everything is finished. So now that I had some infrastructure, I needed a test case. I decided to find all package files in the system's application directories. This is what I came up with: NSArray *packagePaths = [[[NSSearchPathForDirectoriesInDomains(NSAllApplicationsDirectory, NSAllDomainsMask, YES) collect:^(id path) { return (id)[[[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:nil] collect:^(id file) { return (id)[path stringByAppendingPathComponent:file]; }]; }] flattenedArray] select:^(id fullPath) { return [[NSWorkspace sharedWorkspace] isFilePackageAtPath:fullPath]; }]; Yep - that's all one line and it's horrid. I tried a few approaches at adding newlines and indentation to try to clean it up, but it still feels like the actual algorithm is lost in all the noise. I don't know if it's just a syntax thing or my relative in-experience with using a functional style that's the problem, though. For comparison, I decided to do it "the old fashioned way" and just use loops: NSMutableArray *packagePaths = [NSMutableArray new]; for (NSString *searchPath in NSSearchPathForDirectoriesInDomains(NSAllApplicationsDirectory, NSAllDomainsMask, YES)) { for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:searchPath error:nil]) { NSString *packagePath = [searchPath stringByAppendingPathComponent:file]; if ([[NSWorkspace sharedWorkspace] isFilePackageAtPath:packagePath]) { [packagePaths addObject:packagePath]; } } } IMO this version was easier to write and is more readable to boot. I suppose it's possible this was somehow a bad example, but it seems like a legitimate way to use blocks to me. (Am I wrong?) Am I missing something about how to write or structure Objective-C code with blocks that would clean this up and make it clearer than (or even just as clear as) the looped version?

  Read the article

• Efficiency of Java "Double Brace Initialization"?

  - by Jim Ferrans

  In Hidden Features of Java the top answer mentions Double Brace Initialization, with a very enticing syntax: Set<String> flavors = new HashSet<String>() {{ add("vanilla"); add("strawberry"); add("chocolate"); add("butter pecan"); }}; This idiom creates an anonymous inner class with just an instance initializer in it, which "can use any [...] methods in the containing scope". Main question: Is this as inefficient as it sounds? Should its use be limited to one-off initializations? (And of course showing off!) Second question: The new HashSet must be the "this" used in the instance initializer ... can anyone shed light on the mechanism? Third question: Is this idiom too obscure to use in production code? Summary: Very, very nice answers, thanks everyone. On question (3), people felt the syntax should be clear (though I'd recommend an occasional comment, especially if your code will pass on to developers who may not be familiar with it). On question (1), The generated code should run quickly. The extra .class files do cause jar file clutter, and slow program startup slightly (thanks to coobird for measuring that). Thilo pointed out that garbage collection can be affected, and the memory cost for the extra loaded classes may be a factor in some cases. Question (2) turned out to be most interesting to me. If I understand the answers, what's happening in DBI is that the anonymous inner class extends the class of the object being constructed by the new operator, and hence has a "this" value referencing the instance being constructed. Very neat. Overall, DBI strikes me as something of an intellectual curiousity. Coobird and others point out you can achieve the same effect with Arrays.asList, varargs methods, Google Collections, and the proposed Java 7 Collection literals. Newer JVM languages like Scala, JRuby, and Groovy also offer concise notations for list construction, and interoperate well with Java. Given that DBI clutters up the classpath, slows down class loading a bit, and makes the code a tad more obscure, I'd probably shy away from it. However, I plan to spring this on a friend who's just gotten his SCJP and loves good natured jousts about Java semantics! ;-) Thanks everyone!

  Read the article

• Perl coding to PHP coding conversion

  - by Haskella

  Hi, I am trying to convert some Perl into PHP using this guideline: http://www.cs.wcupa.edu/~rkline/perl2php/#basedir Basically I know next to nothing about these two languages. Please give me some simple English explanation of what each line does, I'll be more than happy. Thanks for reading :D Perl CGI program: #!/usr/bin/perl -T use strict; use warnings; use CGI (); my %fruit_codes = ( apple => '2321.html', banana => '1234.html', coconut => '8889.html', ); my $c = CGI->new; my $fruit_parameter = $c->param('fruit_name'); my $iframe_document; if (defined $fruit_parameter and exists $fruit_codes{$fruit_parameter}) { $iframe_document = $fruit_codes{$fruit_parameter}; } else { $iframe_document = 'sorry-no-such-fruit.html'; } $c->header('application/xhtml+xml'); print <<"END_OF_HTML"; <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Fruits</title> </head> <body> <form action="fruits.cgi"> <fieldset> <label for="fruit">Name of the fruit:</label> <input id="fruit" name="fruit_name" type="text" /> <input type="submit" /> </fieldset> </form> <iframe src="$iframe_document"> <a href="$iframe_document">resulting fruit</a> </iframe> </body> </html> END_OF_HTML 1;

  Read the article

• C# or C++ game: many 16 color images loaded into RAM. Efficient solution?

  - by user560639

  I am in the planning stages of creating a fighting game and am unsure how to handle one issue relating to memory. Background info: - Still debating whether to use C# (XNA) or C++. We do not want to commit to either until we have explored how to solve this problem in both languages. - Using a max of 256MB RAM would be great if possible. - Two characters will be present at a time, and these characters can only change between battles. There is time to load/free memory between battles, but the game needs to run at a constant 60 drawn frames per second during combat. Each frame is 16.67ms - The total number of images per character is in the low hundreds. Each image is roughly 200x400 pixels. Only one image from each character will be displayed at any given moment. Uncompressed, each image takes roughly 300kb from my calculations; upwards of 100MB for a whole character. This is pushing too close to the 256MB limit given that memory will be needed for some other resources as well. Since each image can be made with a total of 16 colors. Theoretically I should be able to use 1/8th the space if I can take advantage of this. I've looked around but haven't found any word of native support for paletted images. (Storing each pixel using fewer bits that each map to a 32-bit RGBa color) I was considering making my own file format with 4 bits per pixel (and some extra palette info), loading all the images of this new format into RAM before battle, and then when drawing any specific image, decompress only that image into a raw image so it can be rendered properly. I don't know if it's realistic to perform so many assignment operations (appx 200x400 for each character = 160k) each frame. It sounds very hacky to me. Does anyone have advice on whether my solution sounds reasonable, and if there is perhaps a better one available? Thanks so much! (I also attempted to use an image with only 1 channel, then use a shader to perform a series of if statements to translate various values into other colors. Unfortunately, there were too many lines of code for the shader. It is also rather hacky and does not scale well.)

  Read the article

• Personal Project - Next practical language/tech to learn

  - by Paul Nathan

  I'm working on a personal project doing some finance analysis. It's a totally new field for me, and I'm really having fun with it so far, plus working in the high-level language arena is a great break from my embedded systems daytime work. I have a MySQL backend on a non-local server with a pile of stock data. My task now is to do some analysis of the stocks and produce something approximating a useful result. There are a couple technical difficulties. (1) I have a lot of records. To be precise, I believe I'm near 100K records right now, and this number grows by 6.1K each weekday. I need to create a way to rummage through these fields and do data analysis - based on a given computation, go look at this other set. Fine and dandy, nothing too outre. But this means I could really use a straightforward API for talking to MySQL. (2) Ideally, it runs on OS X 10.4.11. No Windows/Linux machine at home. (3) I can use PHP, C++, Perl, etc. I even have an R installation. I'm pretty flexible with stuff, so long as it runs on OS X. (Lots of options here, pick water, H20, or dihydrogen monoxide ;-) ) (4)Lack of hassle. While I like clever and fun ways of doing things, I'm trying to get some analysis done, not spend ten hours doing installation work and scratching my head figuring out a theoretical syntax question needed to spout out "hello world". What's the question? I'd like to dig into something different than my usual PHP/C++/C toolset. I'm looking for recommendations for languages/technologies that will assist me and meet the above requirements. In particular, I've heard a lot of buzz about F# and Python on SO. I've used CLISP for small problems before, and kinda liked it. I'm seeking opinions about those in particular. edit:since I rent the DB server and have a limited amount of CPU time online, I'm trying to do the analysis on a local machine.

  Read the article

• using Java interfaces

  - by mike_hornbeck

  I need to create interface MultiLingual, that allows to display object's data in different languages (not data itself, but introduction like "Author", "Title" etc.). Printed data looks like this : 3 grudnia 1998 10th of June 1924 Autor: Tolkien Tytul: LoTR Wydawnictwo: Amazon 2010 Author: Mitch Albom Title: Tuesdays with Morrie Publishing House: Time Warner Books 2003 37 360,45 PLN 5,850.70 GBP 3rd of December 1998 10th of June 1924 Author: Tolkien Title: LoTR Publishing House: Amazon 2010 Author: Mitch Albom Title: Tuesdays with Morrie Publishing House: Time Warner Books 2003 37,360.45 GBP 5,850.70 GBP Test code looks like this : public class Main { public static void main(String[] args){ MultiLingual gatecrasher[]={ new Data(3,12,1998), new Data(10,6,1924,MultiLingual.ENG), new Book("LoTR", "Tolkien", "Amazon", 2010), new Book("Tuesdays with Morrie", "Mitch Albom", "Time Warner Books",2003, MultiLingual.ENG), new Money(1232895/33.0,MultiLingual.PL), new Money(134566/23.0,MultiLingual.ENG), }; for(int i=0;i < gatecrasher.length;i++) System.out.println(gatecrasher[i]+"\n"); for(int i=0;i < gatecrasher.length;i++) System.out.println(gatecrasher[i].get(MultiLingual.ENG)+"\n"); } } So i need to introduce constants ENG, PL in MultiLingual interface, as well as method get(int language) : public interface MultiLingual { int ENG = 0; int PL= 1; String get(int lang); } And then I have class Book. Problem starts with the constructors. One of them needs to take MultiLingual.ENG as argument, but how to achieve that ? Is this the proper way? : class Book implements MultiLingual { private String title; private String publisher; private String author; public Book(String t, String a, String p, int y, MultiLingual lang){ } Or should I treat this MultiLingual.ENG as int variable , that will just change automatically constants in interface? Second constructor for book doesn't take MultLingual as argument, but following implementation is somehow wrong : public Book(String t, String a, String p, int y){ Book someBook = new Book(t, a, p, y, MultiLingual m); } I could just send int m in place of MultiLingual m but then I will have no control if language is set to PL or ENG. And finally get() method for Boook but I think at least this should be working fine: public String get(int lang){ String data; if (lang == ENG){ data = "Author: "+this.author+"\n"+ "Title: "+this.title+"\n"+ "Publisher: "+this.publisher+"\n"; } else { data = "Autor: "+this.author+"\n"+ "Tytul: "+this.title+"\n"+ "Wydawca: "+this.publisher+"\n"; } return data; } @Override public String toString(){ return ""; } }

  Read the article

• Any software for pattern-matching and -rewriting source code?

  - by Steven A. Lowe

  I have some old software (in a language that's not dead but is dead to me ;-)) that implements a basic pattern-matching and -rewriting system for source code. I am considering resurrecting this code, translating it into a modern language, and open-sourcing the project as a refactoring power-tool. Before I go much further, I want to know if anything like this exists already (my google-fu is fanning air on this tonight). Here's how it works: the pattern-matching part matches source-code patterns spanning multiple lines of code using a template with binding variables, the pattern-rewriting part uses a template to rewrite the matched code, inserting the contents of the bound variables from the matching template matching and rewriting templates are associated (1:1) by a simple (unconditional) rewrite rule the software operates on the abstract syntax tree (AST) of the input application, and outputs a modified AST which can then be regenerated into new source code for example, suppose we find a bunch of while-loops that really should be for-loops. The following template will match the while-loop pattern: Template oldLoopPtrn int @cnt@ = 0; while (@cnt@ < @max@) { … @body@ ++@cnt@; } End_Template while the following template will specify the output rewrite pattern: Template newLoopPtrn for(int @cnt@ = 0; @cnt@ < @max@; @cnt@++) { @body@ } End_Template and a simple rule to associate them Rule oldLoopPtrn --> newLoopPtrn so code that looks like this int i=0; while(i<arrlen) { printf("element %d: %f\n",i,arr[i]); ++i; } gets automatically rewritten to look like this for(int i = 0; i < arrlen; i++) { printf("element %d: %f\n",i,arr[i]); } The closest thing I've seen like this is some of the code-refactoring tools, but they seem to be geared towards interactive rewriting of selected snippets, not wholesale automated changes. I believe that this kind of tool could supercharge refactoring, and would work on multiple languages (even HTML/CSS). I also believe that converting and polishing the code base would be a huge project that I simply cannot do alone in any reasonable amount of time. So, anything like this out there already? If not, any obvious features (besides rewrite-rule conditions) to consider? EDIT: The one feature of this system that I like very much is that the template patterns are fairly obvious and easy to read because they're written in the same language as the target source code, not in some esoteric mutated regex/BNF format.

  Read the article

• Do you still limit line length in code?

  - by Noldorin

  This is a matter on which I would like to gauge the opinion of the community: Do you still limit the length of lines of code to a fixed maximum? This was certainly a convention of the past for many languages; one would typically cap the number of characters per line to a value such as 80 (and more recnetly 100 or 120 I believe). As far as I understand, the primary reasons for limiting line length are: Readability - You don't have to scroll over horizontally when you want to see the end of some lines. Printing - Admittedly (at least in my experience), most code that you are working on does not get printed out on paper, but by limiting the number of characters you can insure that formatting doesn't get messed up when printed. Past editors (?) - Not sure about this one, but I suspect that at some point in the distant past of programming, (at least some) text editors may have been based on a fixed-width buffer. I'm sure there are points that I am still missing out, so feel free to add to these... Now, when I tend to observe C or C# code nowadays, I often see a number of different styles, the main ones being: Line length capped to 80, 100, or even 120 characters. As far as I understand, 80 is the traditional length, but the longer ones of 100 and 120 have appeared because of the widespread use of high resolutions and widescreen monitors nowadays. No line length capping at all. This tends to be pretty horrible to read, and I don't see it too often, though it's certainly not too rare either. Inconsistent capping of line length. The length of some lines are limited to a fixed maximum (or even a maximum that changes depending on the file/location in code), while others (possibly comments) are not at all. My personal preference here (at least recently) has been to cap the line length to 100 in the Visual Studio editor. This means that in a decently sized window (on a non-widescreen monitor), the ends of lines are still fully visible. I can however see a few disadvantages in this, especially when you end up writing code that's indented 3 or 4 levels and then having to include a long string literal - though I often take this as a sign to refactor my code! In particular, I am curious what the C and C# coders (or anyone who uses Visual Studio for that matter) think about this point, though I would be interested in hearing anyone's thoughts on the subject. Edit Thanks for the all answers - I appreciate the variety of opinions here, all presenting sound reasons. Consensus does seem to be tipping in the direction of always (or almost always) limit the line length. Interestingly, it seems to be in various coding standards to limit the line length. Judging by some of the answers, both the Python and Google CPP guidelines set the limit at 80 chars. I haven't seen anything similar regarding C# or VB.NET, but I would be curious to see if there are ones anywhere.

  Read the article

• Which mobile operating system should I code for?

  - by samgoody

  It seems as though mobile computing has fully arrived. I would like to rewrite two of our programs for mobile devices, but am a bit lost as to which platform to target. Complicating this decision: I would need to learn the relevant languages and IDEs - my coding to date has been almost all web based (PHP, JS, Actionscript, etc. Some ASPX). Most users seem to be religious about their mobile decision, so oral conversations leave me more confused then enlightened. I do not yet own a smartphone - will have to buy one once I know which platform to be aiming for. Both of my programs are more for business users, (one is only useful for C.P.A.s). I am a single developer, and cannot develop for more than one platform at a time. Getting it right is important. Based on what I've found on the web, I would've expected RIM to be a shoo-in, and the general order to be as follows: RIM Blackberry - More of them than any other brand. Despite naysayers, they've had double the sales (or perhaps 5X the sales) of any other smartphone, and have continued to grow. And, they have business users. Android - According to Schmidt, they have outsold everyone else except RIM (though I can't find where I read that now), and they are just getting started. According to Comscore, they are already at 8% of the market and expected to hit Shcmidt's claims within six months. Nokia - The largest worldwide. If they would just make up between Maemo or Symbian, I would be far less confused. iPhone - Much more competition by other apps, fewer sales to be had, and a overlord that can delay or cancel my app at any time. Is Cocoa hard to learn? Windows Mobile - Word is that version 7 will not be backwards compatible and losing market share. Palm WebOS - Perhaps this should go first, as it is the only one that offers tools to make my life easy as a web application developer. No competition in marketplace. But not very many users either. However, a search on StackOverflow shows a hugely disproportionate number of iPhone questions versus Blackberry. Likewise, there are clearly more apps on iPhone, so it must be getting developer love. What is the one platform I should develop for? Please back up your answer with the logic.

  Read the article

• Which management tools would you recommend for software development?

  - by Robert Schneider

  What would you generally recommend for software developement? Which combination do you use or would you recommend? I assume that tools are needed for Version control, issues/bugs/task, Release management, Requirement management. Tools for Test management and Project management should be accounted for as well, I guess. Did I forget anything? Maybe tools for Continous Integration. I'm not interested in a halfway combination of one ore two tools like a Subversion + Bugzilla (I know they are good but for a company they might not be sufficient). And also tools like make/ant shouldn't be taken into account. I'd like to know a combination that covers all what is important for professional software development. However, it could be a single tool of course if it covers all the management issues. What do you think would be a good combination? I assume a combination should be regardes as good if the tools itself are good but also if they have good integrations. Udate: Something like Ant is just a script not a management tool. Okay: we do already have Perforce. But this is somehow generic. We have different projects that uses C-, VS/.NET-, Python-, PHP and we will be starting new projects in Java. Plenty of languages and frameworks, though some are going to be legacy. So the tools should be generic. Obviously we don't want to use Bugzilla for one project and Jira for another. The management tools have to be generic. Further thoughts: Think of sourceforge: For each project they offer a version control system, an issue tracker, a wiki, ... totally independent of what the project is about. Those are some management tools that a project usually needs. I would say that most companies need such a set of tools. But I could imagine, if a company has several projects, they need further tools too: for Project management, Quality management, ... And I could imagine there are some recommendable combinations of tools. A not really apropiate comparison to this could be LAMP (Linux, Apache, MySQL, PHP). A combination of software that has evolved since they work very well together, and are pretty useful for a lot of applications (or rather web sites). So maybe there are some recommendable management tool combinations that also fit toghether like LAMP. The integration is important. Thank you for the incredibly fast and helpful responses!!!

  Read the article

• Should I use Python or Assembly for a super fast copy program

  - by PyNEwbie

  As a maintenance issue I need to routinely (3-5 times per year) copy a repository that is now has over 20 million files and exceeds 1.5 terabytes in total disk space. I am currently using RICHCOPY, but have tried others. RICHCOPY seems the fastest but I do not believe I am getting close to the limits of the capabilities of my XP machine. I am toying around with using what I have read in The Art of Assembly Language to write a program to copy my files. My other thought is to start learning how to multi-thread in Python to do the copies. I am toying around with the idea of doing this in Assembly because it seems interesting, but while my time is not incredibly precious it is precious enough that I am trying to get a sense of whether or not I will see significant enough gains in copy speed. I am assuming that I would but I only started really learning to program 18 months and it is still more or less a hobby. Thus I may be missing some fundamental concept of what happens with interpreted languages. Any observations or experiences would be appreciated. Note, I am not looking for any code. I have already written a basic copy program in Python 2.6 that is no slower than RICHCOPY. I am looking for some observations on which will give me more speed. Right now it takes me over 50 hours to make a copy from a disk to a Drobo and then back from the Drobo to a disk. I have a LogicCube for when I am simply duplicating a disk but sometimes I need to go from a disk to Drobo or the reverse. I am thinking that given that I can sector copy a 3/4 full 2 terabyte drive using the LogicCube in under seven hours I should be able to get close to that using Assembly, but I don't know enough to know if this is valid. (Yes, sometimes ignorance is bliss) The reason I need to speed it up is I have had two or three cycles where something has happened during copy (fifty hours is a long time to expect the world to hold still) that has caused me to have to trash the copy and start over. For example, last week the water main broke under our building and shorted out the power.

  Read the article

• one page over 9 different urls

  - by Ali Demirtas

  Hi I am using prestashop as the cart for my website. I have a problem; the website used to be in dynamic urls. I enabled friendly url writing. The problem is that one page has more than one url. You can access a same page from the dynamic url and static url. In fact a single page has 9 different urls. This obviously creates problems for seo as search engines penalize my website for this. Here are examples of a page with more than 2 urls (http://www.turkishfootballstore.com/lang-nl/product.php?id_product=515) (http://www.turkishfootballstore.com/fenerbahce/515-fenerbahce-thuisshirt-20092010.html) (http://www.turkishfootballstore.com/lang-nl/fenerbahce/515-fenerbahce-thuisshirt-20092010.html) you can see even the static url's have 2 one with language defined and the other without. out fo the three urls above the correct one is the one at the bottom. What can I do to solve this problem? I have no knowledge of programming. Here is the htaccess for the website. Any sample code or help is really appreciated. There is 550 pages and every page is published in 17 different languages I want to use a 301 auto redirect. What is the simplest way to do it? I have no idea of coding. # URL rewriting module activation RewriteEngine on # URL rewriting rules RewriteRule ^([a-z0-9]+)\-([a-z0-9]+)(\-[_a-zA-Z0-9-]*)/([_a-zA-Z0-9-]*)\.jpg$ /img/p/$1-$2$3.jpg [L,E] RewriteRule ^([0-9]+)\-([0-9]+)/([_a-zA-Z0-9-]*)\.jpg$ /img/p/$1-$2.jpg [L,E] RewriteRule ^([0-9]+)(\-[_a-zA-Z0-9-]*)/([_a-zA-Z0-9-]*)\.jpg$ /img/c/$1$2.jpg [L,E] RewriteRule ^lang-([a-z]{2})/([a-zA-Z0-9-]*)/([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /product.php?id_product=$3&isolang=$1$5 [L,E] RewriteRule ^lang-([a-z]{2})/([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /product.php?id_product=$2&isolang=$1$4 [L,E] RewriteRule ^lang-([a-z]{2})/([0-9]+)\-([a-zA-Z0-9-]*)(.*)$ /category.php?id_category=$2&isolang=$1 [QSA,L,E] RewriteRule ^([a-zA-Z0-9-]*)/([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /product.php?id_product=$2$4 [L,E] RewriteRule ^([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /product.php?id_product=$1$3 [L,E] RewriteRule ^([0-9]+)\-([a-zA-Z0-9-]*)(.*)$ /category.php?id_category=$1 [QSA,L,E] RewriteRule ^content/([0-9]+)\-([a-zA-Z0-9-]*)(.*)$ /cms.php?id_cms=$1 [QSA,L,E] RewriteRule ^([0-9]+)__([a-zA-Z0-9-]*)(.*)$ /supplier.php?id_supplier=$1$3 [QSA,L,E] RewriteRule ^([0-9]+)_([a-zA-Z0-9-]*)(.*)$ /manufacturer.php?id_manufacturer=$1$3 [QSA,L,E] RewriteRule ^lang-([a-z]{2})/(.*)$ /$2?isolang=$1 [QSA,L,E] # Catch 404 errors ErrorDocument 404 /404.php Options +FollowSymLinks RewriteEngine on RewriteCond %{HTTP_HOST} ^***.com [NC] RewriteRule ^(.*)$ http://www.***.com/$1 [L,R=301] Options +FollowSymLinks RewriteEngine on # index.php to / RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /.*index\.php\ HTTP/ RewriteRule ^(.*)index\.php$ /$1 [R=301,L] Header set Cache-Control: "no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0"

  Read the article

< Previous Page | 571 572 573 574 575 576 577 578 579 580 581 582  | Next Page >