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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...), you will get the return value thrown by the ls command, which should be 0 (default "success" return value). If it doesn't exist, you should get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their meaning in the corresponding man pa...
Why use @PostConstruct?
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edited Oct 5 '11 at 13:20
Jasper
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answered Aug ...
Ruby's ||= (or equals) in JavaScript?
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answered Sep 30 '13 at 7:27
Dzung NguyenDzung Nguyen
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Django - how to create a file and save it to a model's FileField?
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edited Apr 3 '18 at 12:20
pawas kr. singh
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What is the difference between square brackets and parentheses in a regex?
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edited Aug 30 '17 at 16:21
B--rian
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Using Linq to get the last N elements of a collection?
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collection.Skip(Math.Max(0, collection.Count() - N));
This approach preserves item order without a dependency on any sorting, and has broad compatibility across several LINQ providers.
It is important to take care not to call Skip with a negative ...
When to use pip requirements file versus install_requires in setup.py?
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answered Aug 16 '11 at 21:04
Ian BickingIan Bicking
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What is in your .vimrc? [closed]
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104
votes
You asked for it :-)
"{{{Auto Commands
" Automatically cd into the directo...
classical inheritance vs prototypal inheritance in javascript
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250
Both the code samples you demonstrated in your question make use of prototypal inheritance. In f...
Comparing two NumPy arrays for equality, element-wise
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(A==B).all()
test if all values of array (A==B) are True.
Note: maybe you also want to test ...