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Move an array element from one array position to another
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Find all packages installed with easy_install/pip?
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edited Nov 2 '17 at 13:31
TheodorosPloumis
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Warning: push.default is unset; its implicit value is changing in Git 2.0
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2154
It's explained in great detail in the docs, but I'll try to summarize:
matching means git p...
Pass a data.frame column name to a function
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You can just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function...
Why does the indexing start with zero in 'C'?
...be denoted as array[0].
For more info:
http://developeronline.blogspot.com/2008/04/why-array-index-should-start-from-0.html
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How to reverse a singly linked list using only two pointers?
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Bootstrap: How do I identify the Bootstrap version?
... bootstrap.css you should have comments like the below:
/*!
* Bootstrap v2.3.1
*
* Copyright 2012 Twitter, Inc
* Licensed under the Apache License v2.0
* http://www.apache.org/licenses/LICENSE-2.0
*
* Designed and built with all the love in the world @twitter by @mdo and @fat.
*/
If they ...
How can I remove a specific item from an array?
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How to open multiple pull requests on GitHub
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edited Oct 27 '19 at 13:17
ahmednabil88
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Difference between array_map, array_walk and array_filter
... preserve the keys.
Example:
<pre>
<?php
$origarray1 = array(2.4, 2.6, 3.5);
$origarray2 = array(2.4, 2.6, 3.5);
print_r(array_map('floor', $origarray1)); // $origarray1 stays the same
// changes $origarray2
array_walk($origarray2, function (&$v, $k) { $v = floor($v); });
print_...