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• which of these modes : cbc,cfb,ctr,ecb,ncfb,nofb,ofb,stream are secure and which are absolute no-no

  - by user393087

  By security I mean that encoded string is indistinguishable from random noise and is different on every encryption of the same text so it is impossible to make a guess on encryption algorithm used or do any dictionary attack on the encoded text. Second: output string length does not correspond to the input string length in easy way, so it is not possible of make guessing on that account. Third: it is possible to verify that the provided password is incorrect so the decoding function could return false instead of supposedly decoded random string.

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• XSLT Get the first occurence of a specific tag

  - by user296430

  Let's say i have a full html-document as XML-input. How would the XSLT-file look if i only want to output the first (or any) image from the html?

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• What's the best way to identify subdomains by PHP dynamically?

  - by kavoir.com

  I have configured the wildcard DNS of *.mydomain.com and it's all working properly. My question is which of these should I rely on identifying client subdomain requests? $_SERVER["HTTP_HOST"] $_SERVER["SERVER_NAME"] $_SERVER["SCRIPT_URI"] They all seem to contain the subdomain part I want but after reading this article by Chris: http://shiflett.org/blog/2005/feb/more-on-filtering-input-and-escaping-output, I'm lost at see and there appears to be no safe way to do this? Any idea on accomplishing this task securely?

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• bash string replacing a some char with another

  - by Amarsh

  folks, i have a string like AxxBCyyyDEFzzLMN I want to replace all x and y and z with _ so that the output is A_BC_DEF_LMN How to do that? I know a series of tr 'x' '' | tr 'y' '' will work, but I want to do taht in one go, without using pipes thanks in advance

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• Bash: how to process variables from an input file?

  - by gilgongo

  I've got a bash script that reads input from a file like this: while IFS="|" read -r a b do echo "$a something $b somethingelse" done < "$FILE" The file it reads looketh like this: http://someurl1.com|label1 http://someurl2.com|label2 However, I'd like to be able to insert the names of variables into that file when it suits me, and have the script process them when it sees them, so the file might look like this: http://someurl1.com?$VAR|label1 http://someurl2.com|label2 So $VAR could be, for example, today's date, producing an output like this: http://someurl1.com something label1 somethingelse http://someurl2.com?20100320 something label2 somethingelse

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• How do I pipe the stdout of a program in DOS to a daily rolling logfile?

  - by J G

  I've got a DOS program kicked off by a cmd script that dumps a lot of data I'd like to track in a log file. I can easily pipe it to a file - but I need a rolling logfile. Is there an easy way to pipe the output to a program that will generate a daily rolling logfile? (ie a new file is created for each day)

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• How can I see what actually happens when a Test::Unit test runs?

  - by Ethan

  In a Rails application I have a Test::Unit functional test that's failing, but the output on the console isn't telling me much. How can I view the request, the response, the flash, the session, the variables set, and so on? Is there something like... rake test specific_test_file --verbose

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• printf, sprintf print at least two decimal places

  - by philbrowndotcom

  I'm trying to figure out how to use sprintf to print at least two decimal places and no leading zeros. For instance input: 23 23.0 23.5 23.55 23.555 23.0000 output: 23.00 23.00 23.50 23.55 23.555 23.00 any formatting help would be appreciated

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• Monochrome BitMap Library

  - by Asad Jibran Ahmed

  I am trying to create a piece of software that can be used to create VERY large (10000x10000) sized bitmaps. All I need is something that can work in monochrome, since the required output is a matrix containing details of black and white pixels in the bitmap. The closest thing I can think of is a font editor, but the size is a problem. Is there any library out there that I can use to create the software, or will I have to write the whole thing from the start?

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• for x in y, type iteration in python. Can I find out what iteration I'm currently on?

  - by foo

  Hi, I have a question about the loop construct in Python in the form of: for x in y: In my case y is a line read from a file and x is separate characters. I would like to put a space after every pair of characters in the output, like this: aa bb cc dd etc. So, I would like to know the current iteration. Is it possible, or do I need to use a more traditional C style for loop with an index?

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• openmp program elapsed time not scaling with increased threads

  - by Griff

  I've got this openmp fortran program doing an embarrassingly parallel problem - do loop over 512^3 elements. See output below. Why would there be such strange behavior in the elapsed time as a function of threads? I thought it would peak at a sweet spot then slowly degrade. This clearly isn't happening. Perhaps I misunderstand something about openmp. Threads, omp_get_wtime 1, 103.76298500015400 2, 65.346454000100493 4, 45.923643999965861 7, 38.074195000110194 8, 36.968765000114217 9, 39.45981499995105 10,40.753379000118002 12,39.577559999888763 14,37.909950000001118

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• C++ memcpy problem :(

  - by Simon

  Hey all :) I have a problem my src pointer of memcpy is pointing wrong. unsigned char* lpBuffer is a buffer that contains my bytes, i checked with olly. The code: IMAGE_DOS_HEADER iDOSh; memcpy(&iDOSh,lpBuffer,sizeof(iDOSh)); The problem is that lpBuffer points wrong, output from debugger is dest = 002859E8 RIGHT src = 000001D8 FALSE src is pointing invalid :( i have no idea why Thanks for reading

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• Cross-platform space remaining on volume using python

  - by Justin Waddell

  I need a way to determine the space remaining on a disk volume using python on linux, Windows and OS X. I'm currently parsing the output of the various system calls (df, dir) to accomplish this - is there a better way?

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• Zend Form - setting title property of option elements

  - by hok

  In Zend Framework how can I set the title properties of option elements within a select? Desired output: <option value="foo" title="bar">option</option>

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• Tell smarty to print block as is

  - by Juriy

  Hello guys, I need to inline some javascript code into the Smarty template files and these {ldelim} {rdelim} things are killing me. Is there a way to tell smarty to ignore the markup for a block and just output it as is? Something similar to CDATA blocks in the xml? Just in case: here is how simple javascript looks now: $(function() {ldelim} $( "#slides" ).accessNews({ldelim} speed : "{$speed}", slideBy : 1 {rdelim}); {rdelim}); creepy heh?

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• finding all permutation of words in a sentence.

  - by Nikhil K

  how can i get all permutation of words in a sentence.can you give a sample c# code for that? eg: if the sentence is "C# not java", the output should be, 1)c# not java 2)c# java not 3)java not c# 4)java c# not 5)not java c# 6)not c# java etc.

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• issue when outputting an http:// address in a sub-array with json and php

  - by Patrick

  Im trying to achieve an output like this {"status":"ok","0":{"id":"11","title":"digg","url":"http://www.digg.com"}} but instead i am getting this {"status":"ok","0":{"id":"11","title":"digg","url":"http:\/\/www.digg.com"}} this is the php code im using to generate the json $links = array('id'=>'11','title'=>'digg','url'=>"http://www.digg.com"); $msg = array('status'=>'ok',$links); echo json_encode($msg); any idea what is causing this?

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• What is the difference between the various unistd.h under /usr/include in Linux ?

  - by Marwan

  Under the /usr/include directory in Linux i entered the command: find -type f -name unistd.h which gave the following output: ./unistd.h ./linux/unistd.h ./asm-generic/unistd.h ./bits/unistd.h ./asm/unistd.h ./sys/unistd.h my question is, what is the purpose of each unistd.h, since there is only one definiton of that file in the single unix specification ? Thanks in advance.

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• How to implement something like PHP's http_build_query and the reverse in javascript?

  - by wamp

  <?php $data = array('foo'=>'bar', 'baz'=>'boom', 'cow'=>'milk', 'php'=>'hypertext processor'); echo http_build_query($data); /* Output: foo=bar&baz=boom&cow=milk&php=hypertext+processor */ How to do similar thing in javascript,say, get the query string from the array ,and convert the array to query string?

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• PHP max_execution_time ignored (no safe mode, no shared host, just localhost/windows7/php 5.3.1 and

  - by Felix

  This problem drives me nuts, because the max_execution_time in the php.ini and in the htaccess and reported from php is definitely higher, than reportet in the warning message. <?php echo "Max execution time: ".ini_get("max_execution_time")."<br />"; while(true) { sleep(1); } ?> Output: Max execution time: 240 Fatal error: Maximum execution time of 60 seconds exceeded in C:\xampp\htdocs\timetest.php on line 5

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• Convert any Form Video into RGB24 Media

  - by BALA

  how to convert YUY2,YUV, RGB565 and More Video subtype into RGB24 Subtype Video in DirectShow + VC++ can u understand my question? I have a Upstream filter its output is in YUY2 Format but i need to convert it into RGB24 Format. Is there any inbuilt Filters in DirectShow or we have to convert it through my code. i have already added ColorSpaceConverter But it is not Connecting with Smart Tee Input Pin.

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• Visual C++: Invalid allocation size. How to force the debugger to stop on this message?

  - by James Roth

  The MFC program I am debugging is printing this message in the "Output" window in Visual Studio 9.0: HEAP[AppName.exe]: Invalid allocation size - 99999998 (exceeded 7ffdefff) I'm pretty sure this is due to a bad "new", uninitialized variable or similar error. The question is: how do I get the debugger to stop on this message so that I can view the stack trace and solve the problem?

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• Using preg_replace to replace all occurrences in php

  - by Greg-J

  Regex is absolutely my weak point and this one has me completely stumped. I am building a fairly basic search functionality and I need to be able to alter my user input based on the following pattern: Subject: %22first set%22 %22second set%22-drupal -wordpress Desired output: +"first set" +"second set" -drupal -wordpress I wish I could be more help as I normally like to at least post the solution I have so far, but on this one I'm at a loss. Any help is appreciated. Thank you.

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• Is this an F# structured printf bug?

  - by ControlFlow

  Code: printfn "%10s" "abc" printfn "%-10s" "abc" printfn "%10d" 123 printfn "%-10d" 123 printfn "%10c" 'a' printfn "%-10c" 'a' Output: abc abc 123 123 a a So right aligning %c does not work as I expect... F# 2.0 build 4.0.30319.1

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• combine lines from 2 prints to single line and insert into mysql database

  - by bleomycin

  Hello everyone i currently have this: import feedparser d = feedparser.parse('http://store.steampowered.com/feeds/news.xml') for i in range(10): print d.entries[i].title print d.entries[i].date How would i go about making it so that the title and date are on the same line? Also it doesn't need to print i just have that in there for testing, i would like to dump this output into a mysql db with the title and date, any help is greatly appreciated!

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