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Reference assignment operator in PHP, =&
What does the =& (equals-ampersand) assignment operator do in PHP?
4 Answers
4
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Add custom messages in assert?
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Another option is to reverse the operands and use the comma operator. You need extra parentheses so the comma isn't treated as a delimiter between the arguments: assert(("A must be equal to B", a == b));
– Keith Thompson
J...
What is the use case of noop [:] in bash?
...ver'
done
It's traditional to use : when the shell syntax requires a command but you have nothing to do.
while keep_waiting; do
: # busy-wait
done
The : builtin dates all the way back to the Thompson shell, it was present in Unix v6. : was a label indicator for the Thompson shell's goto state...
Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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How to call shell commands from Ruby
How do I call shell commands from inside of a Ruby program? How do I then get output from these commands back into Ruby?
20...
Windows equivalent to UNIX pwd
How do I find the local path on windows in a command prompt?
10 Answers
10
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How do I import an SQL file using the command line in MySQL?
...om phpMyAdmin . I want to import it into a different server using the command line.
49 Answers
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Cost of storing AMI
I understand Amazon will charge per GB provisioned EBS storage. If I create AMI of my instance, does this mean my EBS volume will be duplicated, and hence incur additional cost?
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What is the difference between Directory.EnumerateFiles vs Directory.GetFiles?
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From the docs:
The EnumerateFiles and GetFiles methods differ as follows: When you use EnumerateFiles, you can start enumerating the collection of names before the whole collection is returned; when you use GetFiles, you must wait for the whole array of names...
background:none vs background:transparent what is the difference?
...fy a value for any of the half-dozen properties that background is a shorthand for, then it is set to its default value. none and transparent are the defaults.
One explicitly sets the background-image to none and implicitly sets the background-color to transparent. The other is the other way around...