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PHP - Check if two arrays are equal
... with multidimensional arrays (due to the nature of array_diff function).
Testing two indexed arrays, which elements are in different order, using $a == $b or $a === $b fails, for example:
<?php
(array("x","y") == array("y","x")) === false;
?>
That is because the above means:
array(0 ...
What is JavaScript's highest integer value that a number can go to without losing precision?
...se, it's more efficient by about 28.559999999968312 years :), along with a test fiddle:
/**
* Checks if adding/subtracting one to/from a number yields the correct result.
*
* @param number The number to test
* @return true if you can add/subtract 1, false otherwise.
*/
var canAddSubt...
Shell script - remove first and last quote (") from a variable
...
You can do it with only one call to sed:
$ echo "\"html\\test\\\"" | sed 's/^"\(.*\)"$/\1/'
html\test\
share
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Check whether a variable is a string in Ruby
...
In addition to the other answers, Class defines the method === to test whether an object is an instance of that class.
o.class class of o.
o.instance_of? c determines whether o.class == c
o.is_a? c Is o an instance of c or any of it's subclasses?
o.kind_of? c synonym for *is_a?*
c === o f...
form_for with nested resources
...5/nesting-resources
Interestingly, I just learned that most people's unit-tests are not actually testing all paths. When people follow jamisbuck's suggestion, they end up with two ways to get at nested resources. Their unit-tests will generally get/post to the simplest:
# POST /comments
post :crea...
Constructor overload in TypeScript
..., NaN:
var myDesiredValue = 0;
var result = myDesiredValue || 2;
// This test will correctly report a problem with this setup.
console.assert(myDesiredValue === result && result === 0, 'Result should equal myDesiredValue. ' + myDesiredValue + ' does not equal ' + result);
Object.assign(t...
How to create an empty file at the command line in Windows?
... on a mapped drive
Nomad mentions an original one:
C:\Users\VonC\prog\tests>aaaa > empty_file
'aaaa' is not recognized as an internal or external command, operable program or batch file.
C:\Users\VonC\prog\tests>dir
Folder C:\Users\VonC\prog\tests
27/11/2013 10:40 <REP> ...
Duplicate symbols for architecture x86_64 under Xcode
...
When using unit tests, only the .m file is generated. I created a header file for it despite i guess this is not the best solution - i wanted to create a base test class.
– Bruno Muniz
Aug 23 '17 at 10:...
Running Selenium WebDriver python bindings in chrome
...
For Linux
Check you have installed latest version of chrome brwoser-> chromium-browser -version
If not, install latest version of chrome sudo apt-get install chromium-browser
get appropriate version of chrome driver from here
Unzip the chromedriver.zip
Move t...
What's the idiomatic syntax for prepending to a short python list?
...
If someone finds this question like me, here are my performance tests of proposed methods:
Python 2.7.8
In [1]: %timeit ([1]*1000000).insert(0, 0)
100 loops, best of 3: 4.62 ms per loop
In [2]: %timeit ([1]*1000000)[0:0] = [0]
100 loops, best of 3: 4.55 ms per loop
In [3]: %timeit [0]...