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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...
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...
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...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注C/C++及内核技术
...er the world have contributed fixes, improvements and suggestions over the 4 years that the grid has been growing, and there is still no end in sight. Most of the fixes have been sent in by readers so I'm trusting that they have done sufficient testing.
Release 2.27 is a minor update of 2.26 for Vi...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注C/C++及内核技术
...er the world have contributed fixes, improvements and suggestions over the 4 years that the grid has been growing, and there is still no end in sight. Most of the fixes have been sent in by readers so I'm trusting that they have done sufficient testing.
Release 2.27 is a minor update of 2.26 for Vi...
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...
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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