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What is the most efficient string concatenation method in python?
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edited May 11 '16 at 7:04
Quentin Pradet
4,28622 gold badges2626 silver badges4040 bronze badges
answe...
What is the “right” way to iterate through an array in Ruby?
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This will iterate through all the elements:
array = [1, 2, 3, 4, 5, 6]
array.each { |x| puts x }
Prints:
1
2
3
4
5
6
This will iterate through all the elements giving you the value and the index:
array = ["A", "B", "C"]
array.each_with_index {|val, index| puts "#{val} => #{inde...
How to take column-slices of dataframe in pandas
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edited Nov 30 '17 at 5:44
answered Jun 24 '17 at 12:38
T...
How to obtain a Thread id in Python?
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234
threading.get_ident() works, or threading.current_thread().ident (or threading.currentThread().i...
Differences between Perl and PHP [closed]
...= qw(bar baz);
@qux = ('qux', @foo, 'quux'); # @qux is an array containing 4 strings
@bam = ('bug-AWWK!', \@foo, 'fum'); # @bam contains 3 elements: two strings and a array ref
PHP doesn't flatten arrays.
Perl has special code blocks (BEGIN, UNITCHECK, CHECK, INIT and END) that are executed. Unlik...
Google Maps v3 - limit viewable area and zoom level
.../script>
</head>
<body>
<div id="map" style="width: 400px; height: 300px;"></div>
<script type="text/javascript">
// This is the minimum zoom level that we'll allow
var minZoomLevel = 5;
var map = new google.maps.Map(document.getElementById('map...
Modifying a subset of rows in a pandas dataframe
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248
Use .loc for label based indexing:
df.loc[df.A==0, 'B'] = np.nan
The df.A==0 expression crea...
Start / Stop a Windows Service from a non-Administrator user account
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142
Below I have put together everything I learned about Starting/Stopping a Windows Service from a...
Equation for testing if a point is inside a circle
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489
In general, x and y must satisfy (x - center_x)^2 + (y - center_y)^2 < radius^2.
Please no...
Import regular CSS file in SCSS file?
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DaveAlden
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answered Feb 4 '12 at 21:10
Stephen FuhryStephen Fuhry
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