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MySQL: @variable vs. variable. What's the difference?
In another question I posted someone told me that there is a difference between:
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Rails - Validate Presence Of Association?
I have a model A that has a "has_many" association to another model B. I have a business requirement that an insert into A requires at least 1 associated record to B. Is there a method I can call to make sure this is true, or do I need to write a custom validation?
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where is gacutil.exe?
I am using Windows 7 Enterprise 32 bit. I have used Windows command line, and also used VSTS 2008 command line, but when executing gacutil.exe, there is command not found error.
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What is the in a .vimrc file?
I see <leader> in many .vimrc files, and I am wondering what does it mean?
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What does -save-dev mean in npm install grunt --save-dev
I've just started using Grunt.js . It is pretty hard to set up and I am at the point of creating a package.json file.
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How do I create a directory from within Emacs?
How exactly can I create a new directory using Emacs? What commands do I use? (If possible, please provide an example)
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Default visibility of class methods in PHP
I looked at the manual , but I can't seem to find the answer.
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Intersection of two lists in Bash
I'm trying to write a simple script that will list the contents found in two lists. To simplify, let's use ls as an example. Imagine "one" and "two" are directories.
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Update a column value, replacing part of a string
I have a table with the following columns in a MySQL database
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python list by value not by reference [duplicate]
Let's take an example
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