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What do helper and helper_method do?

...s means is doing # application_controller.rb helper :all For Rails > 3.1 # application.rb config.action_controller.include_all_helpers = true # This is the default anyway, but worth knowing how to turn it off makes all helper modules available to all views (at least for all controllers inhe...
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In mocha testing while calling asynchronous function how to avoid the timeout Error: timeout of 2000

... 352 You can either set the timeout when running your test: mocha --timeout 15000 Or you can set...
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Simple Pivot Table to Count Unique Values

... Insert a 3rd column and in Cell C2 paste this formula =IF(SUMPRODUCT(($A$2:$A2=A2)*($B$2:$B2=B2))>1,0,1) and copy it down. Now create your pivot based on 1st and 3rd column. See snapshot ...
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Toggle button using two image on different state

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Objective-C: Extract filename from path string

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Why would finding a type's initializer throw a NullReferenceException?

...llingConventions, System.Type[], System.Reflection.ParameterModifier[])+0xa3: 000007fe`e5735403 488b4608 mov rax,qword ptr [rsi+8] ds:00000000`00000008=???????????????? Trying to load from [rsi+8] when @rsi is NULL. Lets inspect the function: 0:000> ln 000007fe`e5735403 (000007fe`e5...
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JOIN queries vs multiple queries

... Paolo BergantinoPaolo Bergantino 434k7676 gold badges504504 silver badges431431 bronze badges ...
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SimpleTest vs PHPunit

...it/PHPUnit and the "first test" looks pretty much the same. As of PHPUnit 3.7 it's even easier to install it by just using the PHAR Archive wget http://pear.phpunit.de/get/phpunit.phar chmod +x phpunit-3.7.6.phar or for windows just downloading the phar and running: php phpunit-.phar or when usin...
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Compiling Java 7 code via Maven

... 153 Check the mvn script in your maven installation to see how it's building the command. Perhaps yo...
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Any gotchas using unicode_literals in Python 2.6?

...en our code base running under Python 2.6. In order to prepare for Python 3.0, we've started adding: 6 Answers ...