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How to create a temporary directory?
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How to invoke a Linux shell command from Java
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What is the meaning of polyfills in HTML5?
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What is the difference between 'java', 'javaw', and 'javaws'?
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What does “atomic” mean in programming?
...type long. The following operation is not an atomic operation:
foo = 65465498L;
Indeed, the variable is written using two separate operations: one that writes the first 32 bits, and a second one which writes the last 32 bits. That means that another thread might read the value of foo, and see the...
How can I create a correlation matrix in R?
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Getting the count of unique values in a column in bash
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How to show the loading indicator in the top status bar
... |
edited Dec 19 '12 at 8:49
answered Nov 16 '12 at 8:18
Re...
Rails: select unique values from a column
...explains
– dbenhur
Mar 11 '12 at 21:49
65
It's worth noting that Model.uniq.pluck(:rating) is the...
Calling a Method From a String With the Method's Name in Ruby
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