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  • Python large variable RAM useage

    - by PPTim
    Hi, Say there is a dict variable that grows very large during runtime- up into millions of key:value pairs. Does this variable get stored in RAM,effectively using up all the available memory and slowing down the rest of the system? Asking the interpreter to display the entire dict is a bad idea, but would it be okay as long as one key is accessed at a time? Tim

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  • Disable autocomplete on textfield in Django?

    - by tau-neutrino
    Does anyone know how you can turn off autocompletion on a textfield in Django? For example, a form that I generate from my model has an input field for a credit card number. It is bad practice to leave autocompletion on. When making the form by hand, I'd add a autocomplete="off" statement, but how do you do it in Django and still retain the form validation?

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  • Storing JSON in an msSQL database?

    - by JKirchartz
    I'm developing a form generator, and wondering if it would be bad mojo to store JSON in an SQL database? I want to keep my database & tables simple, so I was going to have `pKey, formTitle, formJSON` on a table, and then store {["firstName":{"required":"true","type":"text"},"lastName":{"required":"true","type":"text"}} in formJSON. would this slow down the DB server too much to set live? Any input is appreciated.

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  • Python: Script works, but seems to deadlock after some time

    - by sberry2A
    I have the following script, which is working for the most part Link to PasteBin The script's job is to start a number of threads which in turn each start a subprocess with Popen. The output from each subprocess is as follows: 1 2 3 . . . n Done Bascially the subprocess is transferring 10M records from tables in one database to different tables in another db with a lot of data massaging/manipulation in between because of the different schemas. If the subprocess fails at any time in it's execution (bad records, duplicate primary keys, etc), or it completes successfully, it will output "Done\n". If there are no more records to select against for transfer then it will output "NO DATA\n" My intent was to create my script "tableTransfer.py" which would spawn a number of these processes, read their output, and in turn output information such as number of updates completed, time remaining, time elapsed, and number of transfers per second. I started running the process last night and checked in this morning to see it had deadlocked. There were not subprocceses running, there are still records to be updated, and the script had not exited. It was simply sitting there, no longer outputting the current information because no subprocces were running to update the total number complete which is what controls updates to the output. This is running on OS X. I am looking for three things: I would like to get rid of the possibility of this deadlock occurring so I don't need to check in on it as frequently. Is there some issue with locking? Am I doing this in a bad way (gThreading variable to control looping of spawning additional thread... etc.) I would appreciate some suggestions for improving my overall methodology. How should I handle ctrl-c exit? Right now I need to kill the process, but assume I should be able to use the signal module or other to catch the signal and kill the threads, is that right? I am not sure whether I should be pasting my entire script here, since I usually just paste snippets. Let me know if I should paste it here as well.

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  • What do you call using print statements to debug code?

    - by vgm64
    I'm just curious, but is there a name for the process using print statements to debug your code? An example in pseudocode x=3.2e39 print x y = function1(x) print y z = function2(y) print z w = function3(z) print w Executation: 3.2e39 3.2e36 NaN NaN reveals some bad math in function2. If there's no standard name, what do you call it?

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  • SQL Code Smells

    - by Lijo
    Hi Team, Could you please list some of the bad practices in SQL, that novice people do? I have found the use of "WHILE loop" in scenarios which could be resolved using set operations. Another example is inserting data only if it does not exist. This can be achieved using LEFT OUTER JOIN. Some people go for "IF" Any other thoughts? Thanks Lijo

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  • Eclipse CDT debugger does not show console

    - by KáGé
    Hi, I'm trying to debug a C program using Eclipse CDT-s debugger and gdb on a Windows7 system, and everything seems fine, except for the console not showing up, which is bad, because my program needs input at some points from the keyboard. So how should I make Eclipse's debugger work properly? Thank you.

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  • Javascript obfuscation and extreme situation in production solving

    - by faya
    Hello, I have a few questions regarding JavaScript obfuscation on client side. First question: What is the best tool or best three tools which ones you could suggest for this operation? Second question: How developers should debug such code (in example with firebug) when extreme situation appears in the production if the code is obfuscated? P.S. - I know that it's bad practice to debug in production, but we had some emergencies and experienced sometimes such situations. Thanks for any help!

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  • Find Missing Records

    - by Lennie De Villiers
    Hi, My SQL is a bit bad. I got a query that when I run it I return for example 10 rows but there are 15 in my where clause, how do I identify those 5 that I can't find? Off course I can dump it in MS Excel but how do I use SQL?

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  • Dual-booting Ubuntu and Pardus with GRUB2...Pardus no show?

    - by Ibn Ali al-Turki
    I have Ubuntu 10.10 installed and used to dual-boot Fedora, but I replaced Fedora with Pardus. After the install, I went into ubuntu, and did a sudo update-grub. It detected my Pardus 2011 install there. When I rebooted, it did not show up in my grub2 menu however. I went back to Ubuntu and did it again...then checked the grub.cfg, and it is not there. I have read that Pardus uses a grub legacy. How can I get Pardus into my grub2 menu? Thanks! sudo fdisk -l Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd9b3496e Device Boot Start End Blocks Id System /dev/sda1 * 1 15197 122067968 83 Linux /dev/sda2 36394 60802 196059757 5 Extended /dev/sda3 15197 30394 122067968 83 Linux /dev/sda5 36394 59434 185075308 7 HPFS/NTFS /dev/sda6 59434 60802 10983424 82 Linux swap / Solaris Partition table entries are not in disk order and update-grub Found linux image: /boot/vmlinuz-2.6.35-25-generic Found initrd image: /boot/initrd.img-2.6.35-25-generic Found memtest86+ image: /boot/memtest86+.bin Found Pardus 2011 (2011) on /dev/sda3 Yet after this, I go to grub.cfg, and Pardus is not there.

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  • How to create sleek customized buttons, tables and other views for iPhone/iPad apps?

    - by wgpubs
    I'm looking to know both what can be customized as well as the recommended way to customize some of the major UIView subclasses in the iPhone SDK (in particular UIButton, UITableView/Cell ... but really open to any of the views in the SDK). Any recommended tutorials? Examples? Are there bad practices that can actually hinder performance and/or destablize your app in any way that should be avoided? Thanks

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  • Is my OCZ SSD aligned correctly? (Linux)

    - by Barney Gumble
    I have an OCZ Agility 2 SSD with 40 GB of space. I use it as a system drive in Debian Linux (Squeeze) and in my opinion it's really fast. But I've read a lot on aligning partitions and file systems... And I'm not sure if I succeeded in aligning the partitions correctly. Maybe the SSD could be even faster?? ;-) I use ext4 and here is the output of fdisk -cul: Disk /dev/sda: 40.0 GB, 40018599936 bytes 255 heads, 63 sectors/track, 4865 cylinders, total 78161328 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: [...] Device Boot Start End Blocks Id System /dev/sda1 * 2048 73242623 36620288 83 Linux /dev/sda2 73244670 78159871 2457601 5 Extended /dev/sda5 73244672 78159871 2457600 82 Linux swap / Solaris My partitions were created just by the Debian Squeeze setup assistant. So I didn't care about the details of partitioning. But now I think maybe the installer didn't align it correctly? Actually, 2048 looks good to me (better than odd values like 63 or something like that) but I've no idea... ;-) Help plz! According to some "SSD Alignment Calculator" I found on the web, the OCZ SSDs have a NAND Erase Block Size of 512kB and their NAND Page Size is 4kB. 2048 is divisible by 4 and 512. So are the partitions aligned correctly?

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  • DotNetNuke will not save from editor

    - by Staffan
    A DNN site version 05.02.00(275) When editing a HTML module the following happens: If I make the changes and save before the cookie "portalaliasid" expires (within 1 minute) all is well. BUT if I stay in the editor for a longer time, say 2 minutes, and posting I end up at the editor again with the old content. All my previous work is lost. Now I'm lost - is this a bug, a bad setting or what? /Staffan

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  • Compatibility between Qt and Boost sockets libraries

    - by cake
    Hello In my work, I'm developing a Viewer client for a Offshore simulation server, using sockets to send the simulation data from the Simulator to de Viewer. But, the server uses Boost.asio as it's sockets library. As the client uses Qt for it's GUI, I was wondering if there is any problem in using de Qt Networking library for handling the sockets. Is there any compatibility issues? Thanks in advance, and sorry for my bad english.

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  • Alternative to Page_Load in ASP.NET (and a good WTF story)

    - by Jason
    Woo, I have a doozy of a problem (might even be one for the Daily WTF) and I'm hoping there's a solution. (My apologies for the long post...) I have been working on a website that I inherited about a month ago. One of the parts I have been working on is fixing one of the controls (essentially a dynamic header bar) so that it displays additional information as requested by my users. As part of doing this project, I created a Site.master file so that I wouldn't have to recode the header bar into every single page. When I first started doing this, it seemingly worked very well. All the pages I had developed looked great and the bar updated as it should displaying the information as it should. Well, when I dropped the Site.master (and this control) into older site pages (ones I did not specifically develop) I noticed that it looked bad on some of them, but not all of them. When I say it looked bad, basically, the control would left-align itself to the page rather than center as it should. I spent a couple hours debugging to no avail - CSS looked correct, the HTML appeared to be okay, I didn't see anything in the Javascript (although, I did miss something as I'll point out in a second), and even the old code looked correct (to the best that it could - it's not very well written). Another coworker took a look at the site and couldn't find anything at first, either. It wasn't until I just thought to look at the rendered source code of the page (I had been working in the developer view up to this point in IE8) that it became clear what was wrong. The original developer performs searches on many of the pages. To accomplish this, he queries the database for ALL the data and then loads them into Javascript arrays within the page so he can get access to them. This in itself is a huge problem because we're talking about thousands of items, and it obviously isn't scalable (and, yes, the site is slow). However, it finally clicked what was screwing up the Site.master - when he loads the data into the Javascript arrays, he writes out the data to the HTML upon Page_Load using numerous Response.Write(string) calls. The WTF (and what was messing me up) is that he inserts the Javascript before the DOCTYPE causing IE to go into quirks mode! So, because I need to at least get this release out (I'll fix the real problem later), I was wondering: is there a way I can force this Javascript to be inserted elsewhere into the HTML—after the DOCTYPE at the very least? Right now, all the Response.Write() calls are being done in the Page_Load method. I just need them to be inserted later.

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  • What's an appropriate HTTP status code to return by a REST API service for a validation failure?

    - by michaeljoseph
    I'm currently returning 401 Unauthorized whenever I encounter a validation failure in my Django/Piston based REST API application. Having had a look at the HTTP Status Code Registry I'm not convinced that this is an appropriate code for a validation failure, what do y'all recommend? 400 Bad Request 401 Unauthorized 403 Forbidden 405 Method Not Allowed 406 Not Acceptable 412 Precondition Failed 417 Expectation Failed 422 Unprocessable Entity 424 Failed Dependency Update: "Validation failure" above means an application level data validation failure ie. incorrectly specified datetime, bogus email address etc.

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  • HKLM\SYSTEM\WPA key list changed!!

    - by Andrii
    Hello everyone! Could you please help me and find the reason why list of keys in windows registry branch "HKLM\SYSTEM\WPA\" are changing. Maybe someone knows what exactly this branch contains (i mean what information reflects in keys of branch "HKLM\SYSTEM\WPA\")??? I will be grateful for any information! Thank you very much! P.S. Excuse me for my bad English:)

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  • Ubuntu 12.04/12.10 can't detect windows or any other partitions(Asus z77 UEFI BIOS)

    - by user971155
    I've recently completed tinkering my new pc(motherboard ASUS z77 with UEFI BIOS) and unfortunately not everything works quite well. After installing windows 7 ultimate on a single primary partition(SATA drive) I decided to allocate one more logical partition for additional needs. When I tried doing it with the manager - it said that it couldn't allocate requested size even though I certainly asked for much less than it was available. I thought that it might have been a windows issue and proceded to installing Ubuntu 12.10 x64. When the graphical interface loaded it showed me a message stating that it can't find any other operating system on the drive. When I used custom partioning option it showed me none of my current partions(including that with windows). However, when I boot with "Try Ubuntu" feature it does find them ! I find it weird though. Here's what the console present me with: ubuntu@ubuntu:~$ sudo os-prober /dev/sda1:Windows 7 (loader):Windows:chain ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00072b98 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 100020223 49906688 7 HPFS/NTFS/exFAT /dev/sda3 100022270 1250263039 575120385 5 Extended /dev/sda4 566669312 1250263039 341796864 83 Linux I also tried creating partitions from disk utility which results in error: , Error creating partition: helper exited with exit code 1: In part_add_partition: device_file=/dev/sda, start=51211402240, size=1923000000, type=0x83 Entering MS-DOS parser (offset=0, size=640135028736) MSDOS_MAGIC found looking at part 0 (offset 1048576, size 104857600, type 0x07) new part entry looking at part 1 (offset 105906176, size 51104448512, type 0x07) new part entry looking at part 2 (offset 51211402240, size 588923274240, type 0x05) Entering MS-DOS extended parser (offset=51211402240, size=588923274240) readfrom = 51211402240 MSDOS_MAGIC found Exiting MS-DOS extended parser looking at part 3 (offset 290134687744, size 349999988736, type 0x83) new part entry Exiting MS-DOS parser MSDOS partition table detected containing partition table scheme = 1 got it Error: Can't have overlapping partitions. ped_disk_new() failed Here's what I get when I try to install the system i.stack.imgur.com/pjlb9.png, i.stack.imgur.com/g1lXN.png P.S. It's strange that I even can't create any more partitions neither with disk-utility nor with windows 7 native tools

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  • Strange error from mysql storage engine

    - by zerkms
    General error: 1030 Got error -1 from storage engine the used storage engine is innodb the query was runned when i got it today morning was: SELECT feeds.* FROM feeds ORDER BY RAND() LIMIT 1 i know rand() is bad but it's very small table (<500 records) and not loaded project this error i receive approximately once a day. cannot google anything relevant :-(

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