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delete_all vs destroy_all?
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edited May 23 '17 at 12:26
Community♦
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answered Jul 14 '11 at 18:36
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What is the colon operator in Ruby?
When I say { :bla => 1, :bloop => 2 } , what exactly does the : do? I read somewhere about how it's similar to a string, but somehow a symbol.
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if, elif, else statement issues in Bash
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edited Aug 7 '19 at 5:48
U. Windl
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answered Apr 16 ...
How do you validate a URL with a regular expression in Python?
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12 Answers
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How to shorten my conditional statements
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15 Answers
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How to check if field is null or empty in MySQL?
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Either use
SELECT IF(field1 IS NULL or field1 = '', 'empty', field1) as field1
from tablenam...
How do I call an Angular.js filter with multiple arguments?
...n separate filter arguments by colons.
{{ yourExpression | yourFilter: arg1:arg2:... }}
From Javascript, you call it as
$filter('yourFilter')(yourExpression, arg1, arg2, ...)
There is actually an example hidden in the orderBy filter docs.
Example:
Let's say you make a filter that can repl...
Do you use NULL or 0 (zero) for pointers in C++?
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21 Answers
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C++ new int[0] — will it allocate memory?
...ion function is called to allocate an array with no elements.
From 3.7.3.1/2
The effect of dereferencing a pointer returned as a request for zero size is undefined.
Also
Even if the size of the space requested [by new] is zero, the request can fail.
That means you can do it, but you ca...