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• How to reduce compile time with C++ templates

  - by Shane MacLaughlin

  I'm in the process of changing part of my C++ app from using an older C type array to a templated C++ container class. See this question for details. While the solution is working very well, each minor change I make to the templated code causes a very large amount of recompilation to take place, and hence drastically slows build time. Is there any way of getting template code out of the header and back into a cpp file, so that minor implementation changes don't cause major rebuilds?

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• Good readings about refactoring data structures

  - by Alex_coder

  Nowadays most programmers know about code refactorings. What about refactorings of data structures, are there any good readings about it? One paradigm that I can think of is the normalization process of a relational database. Are there any other good examples?

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• Have you converted from subversion to mercurial? Was it worth the effort?

  - by twk

  I am in the process of knowing Mercurial versioning system better, and I am considering convert from SVN. Anyone already converted? Was that difficult for you and your team to switch? Can you give any advice to stay with SVN or go for Mercurial? Thanks

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• Recipe for creating a corrupt mysql table

  - by Chaim Geretz

  We had a process that crashed while trying to manipulate an expected mysql record set, running the offending query from the mysql cli showed the following. mysql SELECT ...; ERROR 1030: Got error 127 from table handler Is there a way to easily recreate this condition so we can validate our fix ? (production DB was already repaired).

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• Entity Framework 4 omits some associations during model generation

  - by kzen

  After creating an EF4 model from a SQL Server database I noticed that all the relationships of my Users table were not imported into the model as associations. All the other relationships were imported fine. My Users table has a PK userId which is a char(7) field and it is integrated into several other tables in the database as an FK but for some reason EF4 does not import these relationships as associations during the model generation process... Does anyone have any ideas why this would be happening?

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• Exporting an Environment Variable in Ruby

  - by wilhelmtell

  How do I export an environment variable from within a Ruby script to the parent shell? For example, implementing a naïve implementation of the /usr/bin/read utility: #!/usr/bin/ruby varname = ARGV[0] ENV[varname] = STDIN.gets # but have varname exported to the parent process

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• What tools do you use to plan and draw a database structure = tables, relationship

  - by EugeneP

  Modeling tool or just a visual tool for drawing. In fact I only need to draw and later I'll transform the picture into sql by hand to better control the process.

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• Counting context switches per thread

  - by Sarmun

  Is there a way to see how many context switches each thread generates? (both in and out if possible) Either in X/s, or to let it run and give aggregated data after some time. (either on linux or on windows) I have found only tools that give aggregated context-switching number for whole os or per process. My program makes many context switches (50k/s), probably a lot not necessary, but I am not sure where to start optimizing, where do most of those happen.

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• Can you use Ant to Build/Modify XML files?

  - by user369701

  I am quite new to ant and have been looking at the tasks. I am trying to generate an xml file. Do I need to call an external process or does ant have some way to do this? It could be as simple as sending a string to a txt file and saving it as a .xml. Is it possible?

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• ActionScript - how to traverse objects?

  - by Ehmad11

  Hey i wanna do something like this: i=2; _root.("process" + i)._x = var_Process_Pos_x; how it is possible?, correct syntax please.

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• Overloading methods in C#

  - by Craig Johnston

  Is there a way to simplify the process of adding an overloaded method in C# using VS2005? In VB6, I would have just added an Optional parameter the function, but in C# do I have to have to type out a whole new method with this new parameter?

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• How is destroying local variables when a block is exited normally called in C++?

  - by sharptooth

  C++ automagically calls destructors of all local variables in the block in reverse order regardless of whether the block is exited normally (control falls through) or an exception is thrown. Looks like the term stack unwinding only applies to the latter. How is the former process (the normal exit of the block) called in terms of destroying local variables?

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• How to load file into mysql DB on a shared hosting platform?

  - by Vasu

  A process running on my machine collects data from various websites and stores it in the local mysql db. Same data is exported using SELECT INTO OUTFILE and FTPed to the shared host every few hours. My hosting provider doesn't allow LOAD DATA INFILE to be executed on the shared host? What are my other options for automated/scheduled load to MYSQL db on my shared host?

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• What java apis are there to help with annotation processing by using reflection?

  - by Darran

  Hi, I`m looking to start project that needs to process annotations. I was wondering what apis are available to help with reflection and annotation processing. I know theres Apache BeanUtils but are there any others?

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• How to trigger an application in mobile automatically

  - by san6086

  My idea is to make an application start automatically when a message from a specific user reaches the inbox of the mobile . For example if my friend sends some numbers to my mobile, the sms has to be read and validated first and then calculator ( inbuilt mobile application) has to be triggered and process the numbers from the message. Please help me with the above query.

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• Shell complains 'cannot execute binary file'

  - by Negai

  Hi everyone, I've playing around with linux and noticed that for some mysterious reason commands like '/bin/sh ' just will not work. Each time I'm trying to start a process it yields 'cannot execute binary file' error message. m@sanctuary:~$ sh sed /bin/sed: /bin/sed: cannot execute binary file When I first launch sh and try to execute sed, it succeeds. I'm starting to loose my wits. It would be just great, if somebody could help me. Thank you.

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• how can we achieve second application read that file when first application not modifying it

  - by soField

  i have two application first application is bash second is java which one of them is periodically deleting and recreating a specific file (first) the other one is also periodically reading this file and process it in it's own logic (second) how can we achieve second application read that file when first application not modifying it my aim is to force second app read the file only when content of file fully written inside it how can achieve this goal ?

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• How to post data in PHP using file_get_contents?

  - by Paras Chopra

  I am using PHP's function file_get_contents() to fetch contents of a URL and then I process headers through the variable $http_response_header. Now the problem is that some of the URLs need some data to be posted to the URL (for example, login pages). How do I do that? I realize using stream_context I may be able to do that but I am not entirely clear. Thanks.

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• How to segment text images using MATLAB?

  - by user198729

  It's part of the process of OCR,which is : How to segment the sentences into words,and then characters? What's the candidate algorithm for this task?

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• Can I store arbitrary text information in a .avi file?

  - by dronad

  I would like to add some test annotations (xml file) into an avi file as food for a later program that will process it. Is this done/doable ... ideally like a c# library to help me access and read/write the avis. ?

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• Drupal Custom Module - Menu Hook using Query String

  - by Ferry

  Currently I have a custom module with hook_menu for path 'search'. It's working just fine. However, it couldn't process the request when I access /search?q=something. How do I do this? I'm using Drupal 6 btw. Thanks

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• How to handle execvp(...) errors after fork()?

  - by Lukasz Lew

  I do the regular thing: fork() execvp(cmd, ) in child If execvp fails because no cmd is found, how can I notice this error in parent process?

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• How to make .EXE for demonstration of a Android Software built in eclipse?

  - by rob

  I am almost done with my project in android, now I want to make the executable version of the application. I need to demonstrate it in .exe form as soft app as on emulator, not by built and debug process from eclipse. need immediate idea

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• Having two sets of input combined on hadoop

  - by aeolist

  I have a rather simple hadoop question which i'll try to present with an example say you have a list of strings and a large file and you want each mapper to process a piece of the file and one of the strings in a grep like program. how are you supposed to do that? I am under the impression that the number of mappers is a result of the inputsplits produced. I could run subsequent jobs, one for each string, but it seems kinda... messy?

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• How to find what service running on background on Android?

  - by XC

  How to find what service running on background on Android? like input method service, .... Using adb or terminal on android device ? Could I use "top" or "ps" command? Maybe I have to ask in another way? Does the service be presented as one "process", then we can use "ps" or "top" command to find it?

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