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Is errno thread-safe?

...or more threads can encounter errors, all causing the same errno to be set. Under these circumstances, a thread might end up checking errno after it has already been updated by another thread. To circumvent the resulting nondeterminism, POSIX.1c redefines errno as a service that...
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Shortcut to exit scale mode in VirtualBox [closed]

... Input on the Virtual Machine which is stuck in Scale Mode 2) Change or Reset the Host Key. There's no need to even save after changing the settings 3) Re-open the Virtual Machine and it should be reset! share | ...
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Using LIMIT within GROUP BY to get N results per group?

...----------------------------------------- And then you could use FIND_IN_SET, that returns the position of the first argument inside the second one, eg. SELECT FIND_IN_SET('2006', '2006,2003,2008,2001,2007,2009,2002,2004,2005,2000'); 1 SELECT FIND_IN_SET('2009', '2006,2003,2008,2001,2007,2009,20...
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How do I create multiple submit buttons for the same form in Rails?

... You can create multiple submit buttons and provide a different value to each: <% form_for(something) do |f| %> .. <%= f.submit 'A' %> <%= f.submit 'B' %> .. <% end %> This will output: <input type="submit" value="A" id=".." name="com...
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How to display line numbers in 'less' (GNU)

... You can set an enviroment variable to always have these options apply to all less'd file: export LESS='-RS#3NM~g' share | improve...
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show all tags in git log

...efactoring of the Loggers, no dependencies, self-configuration for missing settings. share | improve this answer | follow | ...
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How to check file input size with jQuery?

I have a form with file upload capabilities and I would like to be able to have some nice client side error reporting if the file the user is trying to upload is too big, is there a way to check against file size with jQuery, either purely on the client or somehow posting the file back to the server...
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Remote debugging Tomcat with Eclipse

I can't seem to debug the tomcat application through Eclipse. I've set 16 Answers 16...
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How to only find files in a given directory, and ignore subdirectories using bash

... editor after snippets, if snippets enabled if (StackExchange.settings.snippets.snippetsEnabled) { StackExchange.using("snippets", function() { createEditor(); }); } else { createEditor(); ...
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How to auto-format code in Eclipse?

...en working as a team so that everyone's code is saved with the same format settings. share | improve this answer | follow | ...