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What is a 'Closure'?
...hat variable has a scope. Generally, local variables exist only within the block or function in which you declare them.
function() {
var a = 1;
console.log(a); // works
}
console.log(a); // fails
If I try to access a local variable, most languages will look for it in the current scope, th...
How to correctly require a specific commit in Composer so that it would be available for dependent p
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Artificially create a connection timeout error
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Connect to an existing host but to a port that is blocked by the firewall that simply drops TCP SYN packets. For example, www.google.com:81.
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How do you add swap to an EC2 instance?
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if means 'input file', of means 'output file', bs means 'block size' and count is the number of blocks you want to allocate… you can read the man page of the command for more info: linux.die.net/man/1/dd
– Fábio Batista
May 19 '14 at 22:23
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Why is an int in OCaml only 31 bits?
...ets of integers.
Anything that does not fit in in a word is allocated in a block in the
heap. The word representing this data is then a pointer to the block.
Since the heap contains only blocks of words, all these pointers are
aligned: their few least significants bits are always unset.
Argumentless...
Single huge .css file vs. multiple smaller specific .css files? [closed]
... is something like
<link rel="stylesheet" type="text/css" href="allcss.php?files=positions.css,buttons.css,copy.css" />
Then, the allcss.php script handles concatenating the files and delivering them.
Ideally, the script would check the mod dates on all the files, creates a new composite i...
What is the best way to repeatedly execute a function every x seconds?
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If you want a non-blocking way to execute your function periodically, instead of a blocking infinite loop I'd use a threaded timer. This way your code can keep running and perform other tasks and still have your function called every n seconds...
jQuery: Get height of hidden element in jQuery
...l if #myDiv is already absolute
visibility: 'hidden',
display: 'block'
});
optionHeight = $("#myDiv").height();
$("#myDiv").attr("style", previousCss ? previousCss : "");
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Upload files with HTTPWebrequest (multipart/form-data)
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@php-jquery-programmer, it's generic example code so the parameters have generic names. Think of "param1" as "your_well_named_param_here" and please reconsider your -1.
– Joshcodes
Mar 5 ...
Switch case with fallthrough?
...ch statement with fallthrough cases in Bash (ideally case-insensitive).
In PHP I would program it like:
5 Answers
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