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  • Why is my PHP string being converted to 1?

    - by animuson
    Ok, so here's the quick rundown. I have a function to generate the page numbers. This: <?php die($ani->e->tmpl->pages("/archive", 1, 15, 1, true)); ?> will output Single Page like expected. But this: <?php $page_numbers = $ani->e->tmpl->pages("/archive", 1, 15, 1, true); ?> <?= $page_numbers ?> will output a simple 1 to the page. Why is it getting converted to a 1? I would expect it to store the 'Single Page' string to the page_numbers variable and then output it (like an echo) exactly the same. EDIT: Running a var_dump($page_numbers) returns int(1)... Here is the entire function in context: <?php // other functions... function show_list() { global $ani; $page_numbers = $ani->e->tmpl->pages("/archive", 1, 15, 1, true); ob_start(); ?> <!-- content:start --> <?php $archive_result = $ani->e->db->build(array("select" => "*", "from" => "animuson_archive", "orderby" => "0-time", "limit" => 15)); while ($archive = $ani->e->db->fetch($archive_result)) { ?> <h2><a href="/archive/article/<?= $archive['aid'] ?>/<?= $archive['title_nice'] ?>"><?= $archive['title'] ?></a></h2> <!-- breaker --> <?php } ?> <?= var_dump($page_numbers) ?> <!-- content:stop --> <?php $ani->e->tmpl->process("box", ob_get_clean()); } // other functions... ?>

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  • Access violations in strange places when using Windows file dialogs

    - by Robert Oschler
    A long time ago I found out that I was getting access violations in my code due to the use of the Delphi Open File and/or Save File dialogs, which encapsulate the Windows dialogs. I asked some questions on a few forums and I was told that it may have been due to the way some programs add hooks to the shell system that result in DLLs getting injected in every process, some of which can cause havoc with a program. For the record, the programming environment I use is Delphi 6 Professional running on Windows XP 32-bit. At the time I got around it by not using Delphi's Dialog components and instead calling straight into comdlg32.dll. This solved the problem wonderfully. Today I was working with memory mapped files for the first time and sure enough, access violations started cropping up in weird parts of the code. I tried my comdlg32.dll direct calls and this time it didn't help. To isolate the problem as a test I created a list box with the exact same files I was using during testing. These are the exact same test files I was selecting from an Open File dialog and then launching my memory mapped file with. I set things up so that by clicking on a file in the list box, I would use that file in my memory mapped file test instead of calling into a comdlg32.dll dialog function to select a test file. Again, the access violatons vanished. To show you how dramatic a fix it was I went from experiencing an access violation within 1 to 3 trials to none at all. Unfortunately, it's going to bite me later on of course when I do need to use file dialogs. Has anyone else dealt with this issue too and found the real culprit? Did any of you find a solution I could use to fix this problem instead of dancing around it like I am now? Thanks in advance.

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  • Sparse (Pseudo) Infinite Grid Data Structure for Web Game

    - by Ming
    I'm considering trying to make a game that takes place on an essentially infinite grid. The grid is very sparse. Certain small regions of relatively high density. Relatively few isolated nonempty cells. The amount of the grid in use is too large to implement naively but probably smallish by "big data" standards (I'm not trying to map the Internet or anything like that) This needs to be easy to persist. Here are the operations I may want to perform (reasonably efficiently) on this grid: Ask for some small rectangular region of cells and all their contents (a player's current neighborhood) Set individual cells or blit small regions (the player is making a move) Ask for the rough shape or outline/silhouette of some larger rectangular regions (a world map or region preview) Find some regions with approximately a given density (player spawning location) Approximate shortest path through gaps of at most some small constant empty spaces per hop (it's OK to be a bad approximation often, but not OK to keep heading the wrong direction searching) Approximate convex hull for a region Here's the catch: I want to do this in a web app. That is, I would prefer to use existing data storage (perhaps in the form of a relational database) and relatively little external dependency (preferably avoiding the need for a persistent process). Guys, what advice can you give me on actually implementing this? How would you do this if the web-app restrictions weren't in place? How would you modify that if they were? Thanks a lot, everyone!

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  • crash log in device

    - by seenu
    I need help to understand the crash log. The app works fine on my simulator but it crashes in device. my simulator is run with:-iPhone Simulator 225, iPhone OS 4.1 (iPhone 4/8B5091b) this is my device crash log:- Incident Identifier: CD0E8B93-5CF9-402C-9787-4B175C51A690 CrashReporter Key: 1961913be3204fe8cb5a39c1e00ac0f03a452876 Hardware Model: iPhone1,2 Process: My Game[1115] Path: /var/mobile/Applications/2968E5FB-96DD-443D-B386-D68F08E9345E/My Game.app/My Game Identifier: My Game Version: ??? (???) Code Type: ARM (Native) Parent Process: launchd [1] Date/Time: 2010-12-29 23:39:15.753 -0500 OS Version: **iPhone OS 4.2.1 (8C148)** Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x35de3ad0 0x35d5a000 + 563920 1 libSystem.B.dylib 0x35de3abe 0x35d5a000 + 563902 2 libSystem.B.dylib 0x35de3ab2 0x35d5a000 + 563890 3 libSystem.B.dylib 0x35dfad5e 0x35d5a000 + 658782 4 libstdc++.6.dylib 0x374f2a00 0x3748d000 + 416256 5 libobjc.A.dylib 0x32d9d8d8 0x32d95000 + 35032 6 libstdc++.6.dylib 0x374f0100 0x3748d000 + 405760 7 libstdc++.6.dylib 0x374f0178 0x3748d000 + 405880 8 libstdc++.6.dylib 0x374f02a0 0x3748d000 + 406176 9 libobjc.A.dylib 0x32d9bf28 0x32d95000 + 28456 10 CoreFoundation 0x3759dabc 0x374f9000 + 674492 11 Foundation 0x351a3e6c 0x35151000 + 339564 12 My Game 0x0006325c 0x1000 + 402012 13 My Game 0x00003c98 0x1000 + 11416 14 My Game 0x00062108 0x1000 + 397576 15 My Game 0x00003b08 0x1000 + 11016 16 My Game 0x000074d8 0x1000 + 25816 17 CoreFoundation 0x375466fc 0x374f9000 + 317180 18 CoreFoundation 0x375465d6 0x374f9000 + 316886 19 My Game 0x0005c818 0x1000 + 374808 20 My Game 0x000596a4 0x1000 + 362148 21 CoreFoundation 0x37542a3c 0x374f9000 + 301628 22 My Game 0x000b692c 0x1000 + 743724 23 My Game 0x000b7550 0x1000 + 746832 24 My Game 0x000c2a7c 0x1000 + 793212 25 UIKit 0x358f4ea8 0x358d3000 + 138920 26 UIKit 0x358f44dc 0x358d3000 + 136412 27 UIKit 0x358d7c94 0x358d3000 + 19604 28 UIKit 0x358d73ac 0x358d3000 + 17324 29 GraphicsServices 0x33e77c80 0x33e72000 + 23680 30 CoreFoundation 0x3752f5c4 0x374f9000 + 222660 31 CoreFoundation 0x3752f582 0x374f9000 + 222594 32 CoreFoundation 0x3752182e 0x374f9000 + 165934 33 CoreFoundation 0x37521504 0x374f9000 + 165124 34 CoreFoundation 0x37521412 0x374f9000 + 164882 35 GraphicsServices 0x33e76d1c 0x33e72000 + 19740 36 UIKit 0x3591d574 0x358d3000 + 304500 37 UIKit 0x3591a550 0x358d3000 + 292176 38 My Game 0x000030a4 0x1000 + 8356 39 My Game 0x00003010 0x1000 + 8208 Thread 1: 0 libSystem.B.dylib 0x35d8f974 0x35d5a000 + 219508 1 libSystem.B.dylib 0x35e5e2fc 0x35d5a000 + 1065724 2 libSystem.B.dylib 0x35e5dd68 0x35d5a000 + 1064296 3 libSystem.B.dylib 0x35e5d788 0x35d5a000 + 1062792 4 libSystem.B.dylib 0x35de6970 0x35d5a000 + 575856 5 libSystem.B.dylib 0x35ddd2fc 0x35d5a000 + 537340 Thread 2: 0 libSystem.B.dylib 0x35d5b3b0 0x35d5a000 + 5040 1 libSystem.B.dylib 0x35d5d894 0x35d5a000 + 14484 2 CoreFoundation 0x37521f7c 0x374f9000 + 167804 3 CoreFoundation 0x37521780 0x374f9000 + 165760 4 CoreFoundation 0x37521504 0x374f9000 + 165124 5 CoreFoundation 0x37521412 0x374f9000 + 164882 6 WebCore 0x3318bd14 0x33070000 + 1162516 7 libSystem.B.dylib 0x35de5b44 0x35d5a000 + 572228 8 libSystem.B.dylib 0x35dd77a4 0x35d5a000 + 513956 Thread 0 crashed with ARM Thread State: r0: 0x00000000 r1: 0x00000000 r2: 0x00000001 r3: 0x3e74f308 r4: 0x00000006 r5: 0x00238cfc r6: 0x00238ff0 r7: 0x2fdfdd2c r8: 0x3eba21b8 r9: 0x0000000a r10: 0x3eba21bc r11: 0x0022fb00 ip: 0x00000025 sp: 0x2fdfdd2c lr: 0x35de3ac5 pc: 0x35de3ad0 cpsr: 0x000a0010 Binary Images: 0x1000 - 0xebfff +My Gamearmv6 <15bbbead83159dac341a987c660d2b28> /var/mobile/Applications/2968E5FB-96DD-443D-B386-D68F08E9345E/My Game.app/My Game 0x1f8000 - 0x1f9fff dns.so armv6 <88b569311cca4a9593b2d670051860d1> /usr/lib/info/dns.so 0x2fe00000 - 0x2fe29fff dyld armv6 <617f6daf4103547c47a8407a2e0b90de> /usr/lib/dyld 0x30229000 - 0x30268fff MBXGLEngine armv6 <9d60c44b1ddc55387a0cb77f90660b37> /System/Library/Frameworks/OpenGLES.framework/MBXGLEngine.bundle/MBXGLEngine 0x3027c000 - 0x3027efff IOMobileFramebuffer armv6 <f42bbbf67195a7b98d67ad021bba4784> /System/Library/PrivateFrameworks/IOMobileFramebuffer.framework/IOMobileFramebuffer 0x3027f000 - 0x3038dfff CFNetwork armv6 <d6eeee83216ee9c553134f069f37cbc2> /System/Library/Frameworks/CFNetwork.framework/CFNetwork 0x303ef000 - 0x303f4fff CaptiveNetwork armv6 <f41df4b358b77b29ff85e0eaea88ee1d> /System/Library/PrivateFrameworks/CaptiveNetwork.framework/CaptiveNetwork 0x303f5000 - 0x30444fff Security armv6 <cf625b4dc7ea928891313444ef64a7cb> /System/Library/Frameworks/Security.framework/Security 0x30445000 - 0x3055cfff libicucore.A.dylib armv6 <8968ff3f62d7780bb1bd75026a7628d0> /usr/lib/libicucore.A.dylib 0x3055d000 - 0x30561fff ApplePushService armv6 <0560b630d26e261e205fc58942e1885c> /System/Library/PrivateFrameworks/ApplePushService.framework/ApplePushService 0x3059d000 - 0x305a8fff MobileWiFi armv6 <c7532e63e083a1dd2a0ef7352b85749d> /System/Library/PrivateFrameworks/MobileWiFi.framework/MobileWiFi 0x305aa000 - 0x30612fff libvDSP.dylib armv6 <9d264733fc675943c082bd3b9b567b59> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libvDSP.dylib 0x30613000 - 0x3064dfff MobileCoreServices armv6 <beb473ce80390554bb4af21554522286> /System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices 0x3065c000 - 0x3066efff libbsm.0.dylib armv6 <51e7bb18da9afa44a33e54e42fbd0707> /usr/lib/libbsm.0.dylib 0x3066f000 - 0x306c6fff CoreMedia armv6 <cd5e9398c161f129146931e888e1c92e> /System/Library/Frameworks/CoreMedia.framework/CoreMedia 0x306f0000 - 0x306fefff libz.1.dylib armv6 <84592e96bae1a661374b0f9a5d03a3a0> /usr/lib/libz.1.dylib 0x306ff000 - 0x30729fff PrintKit armv6 <74f9710fa01a33b5bb04c4aeabd6be7d> /System/Library/PrivateFrameworks/PrintKit.framework/PrintKit 0x3072e000 - 0x307d0fff AVFoundation armv6 <da9d96f32791f51ecb439c5eaeeff59a> /System/Library/Frameworks/AVFoundation.framework/AVFoundation 0x307d7000 - 0x3082afff IOKit armv6 <20da5e822f21a8d0a7c5b3e149330efd> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit 0x30831000 - 0x3083bfff AccountSettings armv6 <eca67ab04f724e1fa7c6406c88e75433> /System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings 0x30a04000 - 0x30aa3fff ProofReader armv6 <2734920b62f174c17aeeb15f371615ef> /System/Library/PrivateFrameworks/ProofReader.framework/ProofReader 0x30ad6000 - 0x30b1afff AddressBook armv6 <1f30c3370dad27331a491ba4b190813c> /System/Library/Frameworks/AddressBook.framework/AddressBook 0x30b3d000 - 0x30b9cfff CoreAudio armv6 <ccc4bace0d6eca79a32ed84d566f72e9> /System/Library/Frameworks/CoreAudio.framework/CoreAudio 0x32d7d000 - 0x32d89fff libkxld.dylib armv6 <f74f359de7bbe3ccdc37fa6f332aebf4> /usr/lib/system/libkxld.dylib 0x32d95000 - 0x32e5cfff libobjc.A.dylib armv6 <429841269f8bcecd4ba3264a8725dad6> /usr/lib/libobjc.A.dylib 0x32e5d000 - 0x32ecdfff libsqlite3.dylib armv6 <87b9bb47687902d9120d03d1da9eb9fc> /usr/lib/libsqlite3.dylib 0x32f0c000 - 0x32f1ffff libmis.dylib armv6 <dba9c086b49bd9540930ff27211570d6> /usr/lib/libmis.dylib 0x33055000 - 0x33061fff SpringBoardServices armv6 <fd0c472436b3306f5b56118c93c8a423> /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices 0x33062000 - 0x3306ffff MobileBluetooth armv6 <2b68516e1321011a4efbee2947d463c6> /System/Library/PrivateFrameworks/MobileBluetooth.framework/MobileBluetooth 0x33070000 - 0x338bffff WebCore armv6 <aa3b6827f051da7a3494c9bee4ebe290> /System/Library/PrivateFrameworks/WebCore.framework/WebCore 0x33ab4000 - 0x33ab4fff Accelerate armv6 <cdde24a7ad004b2b2e600cd4f3ac5eb7> /System/Library/Frameworks/Accelerate.framework/Accelerate 0x33bbc000 - 0x33c0afff CoreText armv6 <16c9582fdffb598178287c6ce9fd6897> /System/Library/Frameworks/CoreText.framework/CoreText 0x33c16000 - 0x33d73fff libGLProgrammability.dylib armv6 <aec6b54ffd532bb607aab4acbab679b6> /System/Library/Frameworks/OpenGLES.framework/libGLProgrammability.dylib 0x33d85000 - 0x33e71fff QuartzCore armv6 <77cd91ff21fe6c58c309f2c82eb95ca5> /System/Library/Frameworks/QuartzCore.framework/QuartzCore 0x33e72000 - 0x33e81fff GraphicsServices armv6 <af20aba0ec96e7b7c42bb55ac763c784> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices 0x33ead000 - 0x33f6efff ImageIO armv6 <0c1b6f466667ff345f2399d8142a9d10> /System/Library/Frameworks/ImageIO.framework/ImageIO 0x33f78000 - 0x33f79fff CoreSurface armv6 <5e290514380c626e9b0f9f9985b9dc7a> /System/Library/PrivateFrameworks/CoreSurface.framework/CoreSurface 0x34137000 - 0x34156fff EAP8021X armv6 <fa56845b5396c3ebb368c2368331643c> /System/Library/PrivateFrameworks/EAP8021X.framework/EAP8021X 0x343a0000 - 0x343bffff Bom armv6 <f41bef81e23e2bff59155e5ce46762d3> /System/Library/PrivateFrameworks/Bom.framework/Bom 0x343c0000 - 0x344bdfff JavaScriptCore armv6 <3547c92c1efc0522b087e7f10eba7728> /System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore 0x344be000 - 0x34500fff ManagedConfiguration armv6 <397723a33c19c3487d304d69580acbfc> /System/Library/PrivateFrameworks/ManagedConfiguration.framework/ManagedConfiguration 0x34b52000 - 0x34f1ffff libLAPACK.dylib armv6 <0eb734c91165416224b98c943ff6476b> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLAPACK.dylib 0x34f20000 - 0x35014fff libiconv.2.dylib armv6 <01916d6784f4de8f3746978faae9c5fa> /usr/lib/libiconv.2.dylib 0x35015000 - 0x35022fff CoreVideo armv6 <7b100fd5fdf98db1cd0f0649e7f6f316> /System/Library/Frameworks/CoreVideo.framework/CoreVideo 0x35151000 - 0x35272fff Foundation armv6 <6bdeb19a1fcb93e2930dadb50416f881> /System/Library/Frameworks/Foundation.framework/Foundation 0x3529b000 - 0x352a6fff libbz2.1.0.dylib armv6 <6aa8a4ed0906a495d059ace9125f525d> /usr/lib/libbz2.1.0.dylib 0x352dc000 - 0x35342fff libBLAS.dylib armv6 <11a3677a08175a30df1b3d66d7e0951a> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBLAS.dylib 0x35406000 - 0x35406fff vecLib armv6 <8f914b3e8a581d49fb21d2c0ff75be03> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/vecLib 0x35407000 - 0x3540afff MobileInstallation armv6 <456ed7fe6dd9fcd8e78df425085b1452> /System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation 0x354be000 - 0x354dcfff OpenAL armv6 <e86dc71ad650db8a13e4785e9c35a4b9> /System/Library/Frameworks/OpenAL.framework/OpenAL 0x35541000 - 0x35547fff MBX2D armv6 <fad4955cab36e0179df6f8f27d365b8f> /System/Library/PrivateFrameworks/MBX2D.framework/MBX2D 0x35815000 - 0x3581afff AssetsLibraryServices armv6 <224b3cf992a01814f91481244e3213eb> /System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices 0x3581b000 - 0x35877fff libGLImage.dylib armv6 <7c1049f20c4e64591c09d3ac00c7d3ab> /System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib 0x358bc000 - 0x358c3fff liblockdown.dylib armv6 <f470dea180ddf23886df75eb256d3888> /usr/lib/liblockdown.dylib 0x358cc000 - 0x358cffff libgcc_s.1.dylib armv6 <bed95ed187350ce27d22ed241ef892ea> /usr/lib/libgcc_s.1.dylib 0x358d3000 - 0x35d4ffff UIKit armv6 <14ec6c926b8bda71b73136f6e1a6ac1b> /System/Library/Frameworks/UIKit.framework/UIKit 0x35d5a000 - 0x35e98fff libSystem.B.dylib armv6 <70571c1e697e2ae7f7a9b1a499453bb6> /usr/lib/libSystem.B.dylib 0x35f7e000 - 0x35fc2fff VideoToolbox armv6 <101dbbcd34cc3231a8be3fd6392556aa> /System/Library/PrivateFrameworks/VideoToolbox.framework/VideoToolbox 0x35fdb000 - 0x36162fff CoreGraphics armv6 <9a1d72fa9549d83abc1e735ba37a4dc2> /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics 0x36179000 - 0x36255fff WebKit armv6 <83da207070be989ba81dba3a83d5206a> /System/Library/PrivateFrameworks/WebKit.framework/WebKit 0x36269000 - 0x36278fff OpenGLES armv6 <37eda5ddcff210dd321157da35a87a5e> /System/Library/Frameworks/OpenGLES.framework/OpenGLES 0x363f3000 - 0x363f9fff MobileKeyBag armv6 <2d83bf6a43bab972d77a1a6e0f3b03d2> /System/Library/PrivateFrameworks/MobileKeyBag.framework/MobileKeyBag 0x365db000 - 0x365f9fff libresolv.9.dylib armv6 <9c94634beea733e754dc115737b6e63c> /usr/lib/libresolv.9.dylib 0x36746000 - 0x3683cfff libxml2.2.dylib armv6 <9c44d05cc67f1ebabd795903e581724e> /usr/lib/libxml2.2.dylib 0x3683e000 - 0x36888fff libCGFreetype.A.dylib armv6 <cfc94cfa17958f2f94c9eff208a7dace> /System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib 0x3694c000 - 0x3694ffff libAccessibility.dylib armv6 <74e0f77cc276a9412be268c795fdcbca> /usr/lib/libAccessibility.dylib 0x36955000 - 0x36a1ffff Celestial armv6 <11172a6ee53bdf067548cd4496bc5fe0> /System/Library/PrivateFrameworks/Celestial.framework/Celestial 0x36a2d000 - 0x36a30fff CrashReporterSupport armv6 <00bc60f690e6328b64e7a7b718edf45a> /System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport 0x36a31000 - 0x36a74fff CoreTelephony armv6 <cabbce0fa7630065dc7e7d3ca3bc616c> /System/Library/Frameworks/CoreTelephony.framework/CoreTelephony 0x36c1c000 - 0x36c26fff AggregateDictionary armv6 <f7429444c955e4f13c6761d20032ab52> /System/Library/PrivateFrameworks/AggregateDictionary.framework/AggregateDictionary 0x36c2b000 - 0x36de1fff AudioToolbox armv6 <bb65e8ed531fe5923eb8ac00a7c0d87d> /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox 0x36de2000 - 0x36e16fff AppSupport armv6 <783e14db9585fd063c0c2a755cd121b6> /System/Library/PrivateFrameworks/AppSupport.framework/AppSupport 0x36e17000 - 0x36e2dfff PersistentConnection armv6 <006723906b8ac250c1681a1821fbe94d> /System/Library/PrivateFrameworks/PersistentConnection.framework/PersistentConnection 0x37141000 - 0x37184fff SystemConfiguration armv6 <207f362e707871e74a292cfd1ea7893d> /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration 0x372aa000 - 0x37477fff MediaToolbox armv6 <21ceabd0e5de17ad4e883c85fcd34d51> /System/Library/PrivateFrameworks/MediaToolbox.framework/MediaToolbox 0x37478000 - 0x3747dfff IOSurface armv6 <ffd66ca04dfe7d382d6961f0df3839ff> /System/Library/PrivateFrameworks/IOSurface.framework/IOSurface 0x3748d000 - 0x374f8fff libstdc++.6.dylib armv6 <eccd1d7183e73587b2c0aa5755a19c39> /usr/lib/libstdc++.6.dylib 0x374f9000 - 0x375e4fff CoreFoundation armv6 <ab0eac0ddd5b4ae1bf8541116e3c0bd1> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x3760a000 - 0x3760bfff DataMigration armv6 <d2de7c0db77278484236669c2cdccabb> /System/Library/PrivateFrameworks/DataMigration.framework/DataMigration 0x37731000 - 0x37736fff libGFXShared.dylib armv6 <bd1c480607cc286288db1ca1aec64180> /System/Library/Frameworks/OpenGLES.framework/libGFXShared.dylib 0x377f6000 - 0x37817fff libRIP.A.dylib armv6 <22c6da37f3adf325f99c3a0494e04c02> /System/Library/Frameworks/CoreGraphics.fram

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  • Catching / blocking SIGINT during system call

    - by danben
    I've written a web crawler that I'd like to be able to stop via the keyboard. I don't want the program to die when I interrupt it; it needs to flush its data to disk first. I also don't want to catch KeyboardInterruptedException, because the persistent data could be in an inconsistent state. My current solution is to define a signal handler that catches SIGINT and sets a flag; each iteration of the main loop checks this flag before processing the next url. However, I've found that if the system happens to be executing socket.recv() when I send the interrupt, I get this: ^C Interrupted; stopping... // indicates my interrupt handler ran Traceback (most recent call last): File "crawler_test.py", line 154, in <module> main() ... File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/socket.py", line 397, in readline data = recv(1) socket.error: [Errno 4] Interrupted system call and the process exits completely. Why does this happen? Is there a way I can prevent the interrupt from affecting the system call?

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  • Microsoft products such as Visual Studio 2010 does not require to enter serial number

    - by MainMa
    Hi, I am member of WebsiteSpark and was member of DreamSpark. Both programs enable to download software and provide serial keys to use. Some software like Windows Server has an ISO file to download and a serial number displayed on the website which I must enter during installation. Some other software does not have any serial key. For example, when I downloaded Visual Studio 2010, there was just a link to an ISO file. During installation, there was no such a field as serial number (whereas Visual Studio 2008 had this field at the beginning of installation process). There is the same thing with SQL Server 2008 and Microsoft Expression Studio 3. Even when I've downloaded the public trial RTM version of Windows Seven Enterprise, there were no serial number to enter. I don't think that such expensive products as SQL Server 2008 Enterprise are delivered without serials and online validation, so I suppose that the serial is embedded into the product itself, either in installation binaries or in a separate config file, so is already in the ISO I download so I do not have to enter it. So my question is, how it is done technically? Is each 2 GBs ISO generated on-demand on the server to embed a serial each time this ISO is requested? I suppose that if it is done, it has a huge impact on servers performance (no caching, no streaming...), so what may be the techniques used behind? I want to implement the same feature in a product I intend to ship (to simplify installation by avoiding to ask to enter serial number), but I really don't see how to do it with low impact on server performance.

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  • How to deploy a number of disparate project types?

    - by niteice
    This question is similar to http://stackoverflow.com/questions/1900269/whats-the-best-way-to-deploy-an-executable-process-on-a-web-server. The situation is this: I'm developing a product that needs to be deployed to a web server. It consists of 4 website projects, a background service, a couple of command-line tools, and two assemblies shared by all of these components. Now, I also happen to administer the server that this product will be deployed on. So I'm familiar with everything that may need to be done to perform an update: Copy website files Replace the service binary Install updated components in the GAC Configure IIS Update database schema After some research it seems that, to reduce deployment time and to be able to let the other sysadmins handle deployment, I want to deploy all of these as an MSI, except that I don't know a thing about installers. I know VS can generate web deployment projects, but where do I go from there? Being able to simply click Next a few times on an installer is my goal for deploying updates. It would also be nice to modularize it, so for example, I could distribute the four websites among multiple servers and have everything appear as individual components in the installer, and as one entity in Add/Remove Programs. Is all of this too much to ask in a single package?

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  • Easily (as in WYSIWYG) customize the docbook output

    - by Sukima
    I've used DocBook in the past and I love the idea behind the separation of content from presentation. I am very comfortable editing XML directly. In my extensive search to find the best documenting solution for my needs I am always coming back to this one solution: DocBook - Build system (ant, make, etc.) - Output I have seen lots of information concerning the best WYSIWYG, XML, Text editors for writing DocBook including alternative markup languages like asciidoc. All these solutions focus on the creation of DocBook or the nightmare of the DocBook tool chain. No one ever addresses the Output side other then to say "Just use XSL" or "Custom scripts" When tasked to make a document or manual I don't want to worry about spending countless hours attempting to reprogram, customize, and modify the XSL, CSS, and shell scripts (i.e. O'Riely books). That is a very arduous task. My query: is there a tool that makes the customizing easier? And is there anything that could be similar to say Pages or Word in that the user creates a template and the tool chain does the rest? Attempting to do a visual task like pretty logos and fixing all the broken layouts that the default XSL comes up with (pagination is a mess) is very difficult from a text editor. Content is easy. Editing DocBook XSL was truly a nightmare when I did it in the past. I've searched and I find lots of info on XML editors but nothing on XSL editors. Or am I lacking a key understanding of the process. Thanks.

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  • How to hold payment in paygate for a while?

    - by Fero
    HI all, I have a query regarding holding the payment in PAYGATE PAYMENT GATEWAY. Here is the problem in brief. I am doing a website where the payment should be made only a certain members buy the product. For Example if there is an iPhone in my site, then that particular phone must be buy by certain quantities which given by admin. It may be done one by one user or a single user can buy all the quantities at a single time. In this case as a developer how can i able to hold the payment which received by user? Because i don't want to receive the payments until the certain quantities bought. Because if certain quantities were not buy i need to refund the money to their account. We don't like to do this process. That's why we are looking for holding the payment. Is it possible or what is the best way to solve this problem? Please let me know what is you professional opinion? thanks in advance... Please let me know what is you professional opinion?

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  • Return if remote stored procedure fails

    - by njk
    I am in the process of creating a stored procedure. This stored procedure runs local as well as external stored procedures. For simplicity, I'll call the local server [LOCAL] and the remote server [REMOTE]. USE [LOCAL] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[monthlyRollUp] AS SET NOCOUNT, XACT_ABORT ON BEGIN TRY EXEC [REOMTE].[DB].[table].[sp] --This transaction should only begin if the remote procedure does not fail BEGIN TRAN EXEC [LOCAL].[DB].[table].[sp1] COMMIT BEGIN TRAN EXEC [LOCAL].[DB].[table].[sp2] COMMIT BEGIN TRAN EXEC [LOCAL].[DB].[table].[sp3] COMMIT BEGIN TRAN EXEC [LOCAL].[DB].[table].[sp4] COMMIT END TRY BEGIN CATCH -- Insert error into log table INSERT INTO [dbo].[log_table] (stamp, errorNumber, errorSeverity, errorState, errorProcedure, errorLine, errorMessage) SELECT GETDATE(), ERROR_NUMBER(), ERROR_SEVERITY(), ERROR_STATE(), ERROR_PROCEDURE(), ERROR_LINE(), ERROR_MESSAGE() END CATCH GO When using a transaction on the remote procedure, it throws this error: OLE DB provider ... returned message "The partner transaction manager has disabled its support for remote/network transactions.". I get that I'm unable to run a transaction locally for a remote procedure. How can I ensure that the this procedure will exit and rollback if any part of the procedure fails?

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  • commons-exec: hanging when I call executor.execute(commandLine);

    - by Stefan Kendall
    I have no idea why this is hanging. I'm trying to capture output from a process run through commons-exec, and I continue to hang. I've provided an example program to demonstrate this behavior below. import java.io.DataInputStream; import java.io.IOException; import java.io.PipedInputStream; import java.io.PipedOutputStream; import org.apache.commons.exec.CommandLine; import org.apache.commons.exec.DefaultExecutor; import org.apache.commons.exec.ExecuteException; import org.apache.commons.exec.PumpStreamHandler; public class test { public static void main(String[] args) { String command = "java"; PipedOutputStream output = new PipedOutputStream(); PumpStreamHandler psh = new PumpStreamHandler(output); CommandLine cl = CommandLine.parse(command); DefaultExecutor exec = new DefaultExecutor(); DataInputStream is = null; try { is = new DataInputStream(new PipedInputStream(output)); exec.setStreamHandler(psh); exec.execute(cl); } catch (ExecuteException ex) { } catch (IOException ex) { } System.out.println("huh?"); } }

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  • php sessions in database only writing part of information to the table...

    - by Ronedog
    I'm having difficulty figuring out what's going on here, hoping some one can help me out. I have been using php, mysql storing my session information in the database. The app is only running on localhost, vista. In the php.ini file I commented out the "session.save_handler = files" line and am using a php class to handle the session writes/reads, etc. My login process is this: Submit login credentials via login.php. login.php calls loginprocess.php. loginprocess.php verifies user, and if valid starts a new session and adds data to the session vars, then it redirects to index.php. Here's the problem. the loginprocess.php page has a bunch of session vars that get set like $_SESSION['account_id'] = $account_id; etc. but when I go to index.php and do a var_dump($_SESSION) it just says "array() empty". However, if I do a var_dump($_SESSION) in loginprocess.php, just before the redirection line header("Location: ../index.php"); then it shows all the data in the session variable. If I look in the database where the session information is stored, there is data in the session_id field, created_ts field, and expires field, but the session_data field has nothing inside of it and in the past this is the field where all my session data was stored. How could I be able to var_dump the session in loginprocess.php, but the data not exist in the db table, is it using some kind of caching? I cleared my cookies, etc...but no change. Why is the session_id, being written to the table, but the actual session data is not? Any ideas are appreciated. Thanks.

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  • How to write CData in xml

    - by Rajesh Rolen- DotNet Developer
    i have an xml like : <?xml version="1.0" encoding="UTF-8"?> <entry> <entry_id></entry_id> <entry_status></entry_status> </entry> i am writing data in it like: XmlNode xnode = xdoc.SelectSingleNode("entry/entry_status"); xnode.InnerText = "<![CDATA[ " + Convert.ToString(sqlReader["story_status"]) + " ]]>" ; but its change "<" to "&lt" of CDATA. Please tell me how to fill values in above xml as a CData format. i know that we can create CDATA like : XmlNode itemDescription = doc.CreateElement("description"); XmlCDataSection cdata = doc.CreateCDataSection("<P>hello world</P>"); itemDescription.AppendChild(cdata); item.AppendChild(itemDescription); but my process is to read node of xml and change its value not to append in it. Thanks

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  • Poor performance using RMI-proxies with Swing components

    - by Patrick
    I'm having huge performance issues when I add RMI proxy references to a Java Swing JList-component. I'm retrieving a list of user Profiles with RMI from a server. The retrieval itself takes just a second or so, so that's acceptable under the circumstances. However, when I try to add these proxies to a JList, with the help of a custom ListModel and a CellRenderer, it takes between 30-60 seconds to add about 180 objects. Since it is a list of users' names, it's preferrable to present them alphabetically. The biggest performance hit is when I sort the elements as they get added to the ListModel. Since the list will always be sorted, I opted to use the built-in Collections.binarySearch() to find the correct position for the next element to be added, and the comparator uses two methods that are defined by the Profile interface, namely getFirstName() and getLastName(). Is there any way to speed this process up, or am I simply implementing it the wrong way? Or is this a "feature" of RMI? I'd really love to be able to cache some of the data of the remote objects locally, to minimize the remote method calls.

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  • NUnit integration programmatically with spring

    - by harkon
    Hi! I have a component based architecture framework designed and I use NUnit for isolated testing - okay so far. Now I want to enable integration tests. Therefore the tests use real implementations of the existing components. Each element of the component has a life cycle (init, start and stop) and I created a NUnit component. In the start section the Console runner of the NUnit will be executed. Okay - now if I have a test fixture class in my dlls in the execution path the runner exectues them - fine! But: And this is crucial! Each to be tested implementation exists so far in the process and I want to use this instances for testing. If I use NUnit runner in the current way each instance will be created twice - and above all: I have a spring container and a implementation registry. Via this registry I can get access to all instances in the processes. But how do I give the test fixture access to the existing registry? Good: I can start the component architecture framework in the startup of the nunit runner - but this is not what I want. My guide is the apache Cactus framework (with JUnit and tomcat, JBoss etc.) Can someone help? Thanks a lot! Check: http://cone.codeplex.com

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  • Push TFS 2008 code to remote VSS over VPN?

    - by drovani
    We have a local Team Foundation Server 2008 that we keep our code under version control. However, we also have a paranoid client that has their own Visual Source Safe installation that wants us to keep a running copy of the code on their server as well. As such, I'm hoping there is a way I can just do a nightly push from our TFS repository to their VSS repository. I'm not concerned about keeping each changeset on TFS as a different changeset on the VSS, just a once-nightly push that creates a new changeset on the VSS and uploads the latest changeset from TFS. I guess the first part is if it is even possible for TFS to push an update to VSS. I've noticed that most replies to this question have been something to the tune of "don't do it", but I can't find anything that specifically states that it cannot be done. The second part would then be automating the process by having the TFS server connect to the client's VPN, then push the code changes. I have full control over the TFS server and I can customize the VSS install, if there are settings that need changing, but I'm limited on what I can do about settings on either firewall or server specific settings on the client's VSS server.

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  • Django Database design -- Is this a good stragety for overriding defaults

    - by rh0dium
    Hi SO's I have a question on good database design practices and I would like to leverage you guys for pointers. The project started out simple. Hey we have a bunch of questions we want answered for every project (no problem) Which turned into... Hey we have so many questions can we group them into sections (yup we can do that) Which lead into.. Can we weight these questions and I don't really want some of these questions for my project (Yes but we are getting difficult) And then I'm thinking they will want to have each section have it's own weight.. Requirements So there's the requirements - For n number of project Allow a admin member the ability select the questions for a project Allow the admin member to re-weigh or use the default weights for the questions Allow the admin member to re-weight the sections Allow team members to answer the questions. So here is what I came up with. Please feel free to comment and provide better examples models.py from django.db import models from django.contrib.sites.models import Site from django.conf import settings class Section(models.Model): """ This describes the various sections for a checklist: """ name = models.CharField(max_length=64) description = models.TextField() class Question(models.Model): """ This simply provides a simple way to list out the questions. """ question = models.CharField(max_length=255) answer_type = models.CharField(max_length=16) description = models.TextField() section = models.ForeignKey(Section) class ProjectQuestion(models.Model): """ These are the questions relevant to the project """ question = models.ForeignKey(Question) answer = models.CharField(max_length=255) required = models.BooleanField(default=True) weight = models.FloatField(default = XXX) class Project(models.Model): """ Here is where we want to gather our questions """ questions = models.ManyToManyField(ProjectQuestion) Immediate questions: - When I start a project - any ideas on how to "pre-populate" the questions (and ultimately the weights) for the project? - Is there a generally accepted method for doing this process that I am missing? Basically the idea that you refer to the questions overide your own default weight, and store the answer? - It appears that a good chuck of the work will be done in the views and that a lot of checking will need to occur there? Is that OK? Again - feel free to give me better strategies!! Thanks

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  • Is there a way to easily convert a series of tarballs of a source tree into a git repository?

    - by Hotei
    I'm new to git and I have a moderately large number of weekly tarballs from a long running project. Each tarball has on average a few hundred files in it. I'm looking for a git strategy that will allow me to add the expanded contents of each tarball to a new git repository, starting from version 1.001 and going through version 1.650. As of this stage of the project 99.5% of tarball(n) is just a copy of version(n-1) - in other words, a perfect candidate for git. The desired end result is to have only the master branch remaining at the end of the process. I think I know git well enough to do this "by hand". As I understand it there is no possibility of a merge conflict since there will be no opportunity to change the master before the next version is added and committed. A shell script is my first guess, but I'm not sure how well bash will like it when git checkout branch_n gets processed while bash is executing in branch_n-1. For the purposes of this project the host environment is Ubuntu 10.4, resources available are 8 Gig RAM, 500 Gig Disk space free and 4 CPU processor at 3.ghz . I don't need someone else to solve the problem but I could use a nudge in the right direction as to how a git expert would approach it. Any advice from someone who's "been there done that" would be appreciated. Hotei PS: I have looked at site's suggested "related questions" and found nothing relevant.

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  • Access 2007 and Special/Unicode Characters in SQL

    - by blockcipher
    I have a small Access 2007 database that I need to be able to import data from an existing spreadsheet and put it into our new relational model. For the most part this seems to work pretty well. Part of the process is attempting to see if a record already exists in a target table using SQL. For example, if I extract book information out of the current row in the spreadsheet, it may contain a title and abstract. I use SQL to get the ID of a matching record, if it exists. This works fine except when I have data that's in a non-English language. In this case, it seems that there is some punctuation that is causing me problems. At least I think it's punctuation as I do have some fields that do not have punctuation and are non-English that do not give me any problems. Is there a built-in function that can escape these characters? Currently I have a small function that will escape the single quote character, but that isn't enough. Or, is there a list of Unicode characters that can interfere with how SQL wants data quoted? Thanks in advance.

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  • Sending and receiving IM messages via controller in Rails

    - by Grnbeagle
    Hi, I need a way to handle XMPP communication in my Rails app. My requirements are: Keep an instance of XMPP client running and logged in as one specific user (my bot user) Trigger an event from a controller to send a message and wait for a reply. The message is sent to another machine equipped with a bot so that the reply is supposed to be returned quickly. I installed xmpp4r and backgrounDrb similar to what's described here, but backgrounDrb seems to have evolved and I couldn't get it to wait for a reply. If it has to happen asynchronously, I am willing to use a server-push technology to notify the browser when the reply arrives. To give you a better idea, here are snippets of my code: (In controller) class ServicesController < ApplicationController layout 'simple' def index render :text => "index" end def show @my_service = Service.find(params[:id]) worker = MiddleMan.worker(:jabber_agent_worker) worker.send_request(:arg => {:jid => "someuser@someserver", :cmd => "help"}) render :text => "testing" end end (In worker script) require 'xmpp4r' require 'logger' class JabberAgentWorker < BackgrounDRb::MetaWorker set_worker_name :jabber_agent_worker def create(args = nil) jid = Jabber::JID.new('myagent@myserver') @client = Jabber::Client.new(jid) @client.connect @client.auth('pass') @client.send(Jabber::Presence.new.set_show(:chat).set_status('BackgrounDRb')) @client.add_message_callback do |message| logger.info("**** messaged received: #{message}") # never reaches here end end def send_request(args = nil) to_jid = Jabber::JID.new(args[:jid]) message = Jabber::Message::new(to_jid, args[:cmd]).set_type(:normal).set_id('1') @client.send(message) end end If anyone can tell me any of the following, I'd much appreciate it: issue with my backgrounDrb usage other background process alternatives appropriate for XMPP interactions other ways of achieving this Thanks in advance.

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  • OpenGL Calls Lock/Freeze

    - by Necrolis
    I am using some dell workstations(running WinXP Pro SP 2 & DeepFreeze) for development, but something was recenlty loaded onto these machines that prevents any opengl call(the call locks) from completing(and I know the code works as I have tested it on 'clean' machines, I also tested with simple opengl apps generated by dev-cpp, which will also lock on the dell machines). I have tried to debug my own apps to see where exactly the gl calls freeze, but there is some global system hook on ZwQueryInformationProcess that messes up calls to ZwQueryInformationThread(used by ExitThread), preventing me from debugging at all(it causes the debugger, OllyDBG, to go into an access violation reporting loop or the program to crash if the exception is passed along). the hook: ntdll.ZwQueryInformationProcess 7C90D7E0 B8 9A000000 MOV EAX,9A 7C90D7E5 BA 0003FE7F MOV EDX,7FFE0300 7C90D7EA FF12 CALL DWORD PTR DS:[EDX] 7C90D7EC - E9 0F28448D JMP 09D50000 7C90D7F1 9B WAIT 7C90D7F2 0000 ADD BYTE PTR DS:[EAX],AL 7C90D7F4 00BA 0003FE7F ADD BYTE PTR DS:[EDX+7FFE0300],BH 7C90D7FA FF12 CALL DWORD PTR DS:[EDX] 7C90D7FC C2 1400 RETN 14 7C90D7FF 90 NOP ntdll.ZwQueryInformationToken 7C90D800 B8 9C000000 MOV EAX,9C the messed up function + call: ntdll.ZwQueryInformationThread 7C90D7F0 8D9B 000000BA LEA EBX,DWORD PTR DS:[EBX+BA000000] 7C90D7F6 0003 ADD BYTE PTR DS:[EBX],AL 7C90D7F8 FE ??? ; Unknown command 7C90D7F9 7F FF JG SHORT ntdll.7C90D7FA 7C90D7FB 12C2 ADC AL,DL 7C90D7FD 14 00 ADC AL,0 7C90D7FF 90 NOP ntdll.ZwQueryInformationToken 7C90D800 B8 9C000000 MOV EAX,9C So firstly, anyone know what if anything would lead to OpenGL calls cause an infinite lock,and if there are any ways around it? and what would be creating such a hook in kernal memory ? Update: After some more fiddling, I have discovered a few more kernal hooks, a lot of them are used to nullify data returned by system information calls(such as the remote debugging port), I also managed to find out the what ever is doing this is using madchook.dll(by madshi) to do this, this dll is also injected into every running process(these seem to be some anti debugging code). Also, on the OpenGL side, it seems Direct X is fine/unaffected(I ran one of the DX 9 demo's without problems), so could one of these kernal hooks somehow affect OpenGL?

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  • Is my objective possible using WCF (and is it the right way to do things?)

    - by David
    I'm writing some software that modifies a Windows Server's configuration (things like MS-DNS, IIS, parts of the filesystem). My design has a server process that builds an in-memory object graph of the server configuration state and a client which requests this object graph. The server would then serialize the graph, send it to the client (presumably using WCF), the server then makes changes to this graph and sends it back to the server. The server receives the graph and proceeds to make modifications to the server. However I've learned that object-graph serialisation in WCF isn't as simple as I first thought. My objects have a hierarchy and many have parametrised-constructors and immutable properties/fields. There are also numerous collections, arrays, and dictionaries. My understanding of WCF serialisation is that it requires use of either the XmlSerializer or DataContractSerializer, but DCS places restrictions on the design of my object-graph (immutable data seems right-out, it also requires parameter-less constructors). I understand XmlSerializer lets me use my own classes provided they implement ISerializable and have the de-serializer constructor. That is fine by me. I spoke to a friend of mine about this, and he advocates going for a Data Transport Object-only route, where I'd have to maintain a separate DataContract object-graph for the transport of data and re-implement my server objects on the client. Another friend of mine said that because my service only has two operations ("GetServerConfiguration" and "PutServerConfiguration") it might be worthwhile just skipping WCF entirely and implementing my own server that uses Sockets. So my questions are: Has anyone faced a similar problem before and if so, are there better approaches? Is it wise to send an entire object graph to the client for processing? Should I instead break it down so that the client requests a part of the object graph as it needs it and sends only bits that have changed (thus reducing concurrency-related risks?)? If sending the object-graph down is the right way, is WCF the right tool? And if WCF is right, what's the best way to get WCF to serialise my object graph?

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  • Use Django ORM as standalone [closed]

    - by KeyboardInterrupt
    Possible Duplicates: Use only some parts of Django? Using only the DB part of Django I want to use the Django ORM as standalone. Despite an hour of searching Google, I'm still left with several questions: Does it require me to set up my Python project with a setting.py, /myApp/ directory, and modules.py file? Can I create a new models.py and run syncdb to have it automatically setup the tables and relationships or can I only use models from existing Django projects? There seems to be a lot of questions regarding PYTHONPATH. If you're not calling existing models is this needed? I guess the easiest thing would be for someone to just post a basic template or walkthrough of the process, clarifying the organization of the files e.g.: db/ __init__.py settings.py myScript.py orm/ __init__.py models.py And the basic essentials: # settings.py from django.conf import settings settings.configure( DATABASE_ENGINE = "postgresql_psycopg2", DATABASE_HOST = "localhost", DATABASE_NAME = "dbName", DATABASE_USER = "user", DATABASE_PASSWORD = "pass", DATABASE_PORT = "5432" ) # orm/models.py # ... # myScript.py # import models.. And whether you need to run something like: django-admin.py inspectdb ... (Oh, I'm running Windows if that changes anything regarding command-line arguments.).

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  • How can I tackle 'profoundly found elsewhere' syndrome (inverse of NIH)?

    - by Alistair Knock
    How can I encourage colleagues to embrace small-scale innovation within our team(s), in order to get things done quicker and to encourage skills development? (the term 'profoundly found elsewhere' comes from Wikipedia, although it is scarcely used anywhere else apart from a reference to Proctor & Gamble) I've worked in both environments where there is a strong opposition to software which hasn't been developed in-house (usually because there's a large community of developers), and more recently (with far fewer central developers) where off-the-shelf products are far more favoured for the usual reasons: maintenance, total cost over product lifecycle, risk management and so on. I think the off the shelf argument works in the majority of cases for the majority of users, even though as a developer the product never quite does what I'd like it to do. However, in some cases there are clear gaps where the market isn't able to provide specifically what we would need, or at least it isn't able to without charging astronomical consultancy rates for a bespoke solution. These can be small web applications which provide a short-term solution to a particular need in one specific department, or could be larger developments that have the potential to serve a wider audience, both across the organisation and into external markets. The problem is that while development of these applications would be incredibly cheap in terms of developer hours, and delivered very quickly without the need for glacial consultation, the proposal usually falls flat because of risk: 'Who'll maintain the project tracker that hasn't had any maintenance for the past 7 years while you're on holiday for 2 weeks?' 'What if one of our systems changes and the connector breaks?' 'How can you guarantee it's secure/better/faster/cheaper/holier than Company X's?' With one developer behind these little projects, the answers are invariably: 'Nobody, but...' 'It will break, just like any other application would...' 'I, uh...' How can I better answer these questions and encourage people to take a little risk in order to stimulate creativity and fast-paced, short-lifecycle development instead of using that 6 months to consult about what tender process we might use?

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  • Binding a null variable in a PreparedStatement

    - by Paul Tomblin
    I swear this used to work, but it's not in this case. I'm trying to match col1, col2 and col3, even if one or more of them is null. I know that in some languages I've had to resort to circumlocutions like ((? is null AND col1 is null) OR col1 = ?). Is that required here? PreparedStatement selStmt = getConn().prepareStatement( "SELECT * " + "FROM tbl1 " + "WHERE col1 = ? AND col2 = ? and col3 = ?"); try { int col = 1; setInt(selStmt, col++, col1); setInt(selStmt, col++, col2); setInt(selStmt, col++, col3); ResultSet rs = selStmt.executeQuery(); try { while (rs.next()) { // process row } } finally { rs.close(); } } finally { selStmt.close(); } // Does the equivalient of stmt.setInt(col, i) but preserves nullness. protected static void setInt(PreparedStatement stmt, int col, Integer i) throws SQLException { if (i == null) stmt.setNull(col, java.sql.Types.INTEGER); else stmt.setInt(col, i); }

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