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What does $_ mean in PowerShell?
... in the pipe line, which is called $PSItem in Powershell 3 and newer.
1,2,3 | %{ write-host $_ }
or
1,2,3 | %{ write-host $PSItem }
For example in the above code the %{} block is called for every value in the array. The $_ or $PSItem variable will contain the current value.
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Test whether a Ruby class is a subclass of another class
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Fast way of finding lines in one file that are not in another?
...g to find a fast way of finding lines in file1 that are not present in file2.
11 Answers
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Easiest way to convert int to string in C++
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28 Answers
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Can I read the hash portion of the URL on my server-side application (PHP, Ruby, Python, etc.)?
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How many bytes in a JavaScript string?
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String values are not implementation dependent, according the ECMA-262 3rd Edition Specification, each character represents a single 16-bit unit of UTF-16 text:
4.3.16 String Value
A string value is a member of the type String and is a
finite ordered sequence of zero or
more 16-bit unsigned...
How to detect duplicate values in PHP array?
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239
You can use array_count_values function
$array = array('apple', 'orange', 'pear', 'banana', '...
Sublime Text 2 - View whitespace characters
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662
To view whitespace the setting is:
// Set to "none" to turn off drawing white space, "selection...
How can I split a JavaScript string by white space or comma?
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239
String.split can also accept a regular expression:
input.split(/[ ,]+/);
This particular re...