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Checking if a variable is not nil and not zero in ruby
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unless discount.nil? || discount == 0
# ...
end
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Check if a string contains another string
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390
Use the Instr function
Dim pos As Integer
pos = InStr("find the comma, in the string", ",")
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List of special characters for SQL LIKE clause
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edited Jun 20 at 9:12
community wiki
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How to create a directory using nerdtree
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answered May 22 '10 at 21:59
housetierhousetier
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RegEx: Smallest possible match or nongreedy match
... without matching unless absolutely necessary, use something like (?:blah){0,1}?. For a repeating match (either using {n,} or {n,m} syntax) append a question mark to try to match as few as possible (e.g. {3,}? or {5,7}?).
The documentation on regular expression quantifiers may also be helpful.
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How to align absolutely positioned element to center?
... you can center an absolutely positioned element.
position:absolute;
left:0;
right:0;
margin-left:auto;
margin-right:auto;
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What does android:layout_weight mean?
...ou also have to set the height or width (depending on your orientation) to 0px.
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How to create a shared library with cmake?
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220
Always specify the minimum required version of cmake
cmake_minimum_required(VERSION 3.9)
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Setting custom UITableViewCells height
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Your UITableViewDelegate should implement tableView:heightForRowAtIndexPath:
Objective-C
- (C...
Django - iterate number in for loop of a template
...n use either:
{{ forloop.counter }} index starts at 1.
{{ forloop.counter0 }} index starts at 0.
In template, you can do:
{% for item in item_list %}
{{ forloop.counter }} # starting index 1
{{ forloop.counter0 }} # starting index 0
# do your stuff
{% endfor %}
More info at: for ...