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Regex for password must contain at least eight characters, at least one number and both lower and up
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31 Answers
31
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How do I get a file extension in PHP?
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1802
People from other scripting languages always think theirs is better because they have a built...
What does glLoadIdentity() do in OpenGL?
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139
The identity matrix, in terms of the projection and modelview matrices, essentially resets the...
How do you use “
...) {
function(x) x ^ exponent
}
square <- power(2)
square(2) # -> [1] 4
square(4) # -> [1] 16
cube <- power(3)
cube(2) # -> [1] 8
cube(4) # -> [1] 64
The ability to manage variables at two levels also makes it possible to maintain the state across function invocations by allow...
Cannot add or update a child row: a foreign key constraint fails
table 1
24 Answers
24
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How to pipe stdout while keeping it on screen ? (and not to a output file)
...ty | foo
Reference: The Open Group Base Specifications Issue 7
IEEE Std 1003.1, 2013 Edition, §10.1:
/dev/tty
Associated with the process group of that process, if any. It is
useful for programs or shell procedures that wish to be sure of
writing messages to or reading data from the...
Streaming a video file to an html5 video player with Node.js so that the video controls continue to
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117
The Accept Ranges header (the bit in writeHead()) is required for the HTML5 video controls to ...