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Right query to get the current number of connections in a PostgreSQL DB
...ence.
Both queries are based on exactly the same data, so they will be equally accurate.
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Why are iframes considered dangerous and a security risk?
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As soon as you're displaying content from another domain, you're basically trusting that domain not to serve-up malware.
There's nothing wrong with iframes per se. If you control the content of the iframe, they're perfectly safe.
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difference between offsetHeight and clientHeight
...ly because the browser already has the clientSize readily available (after all, it it the viewport), but needs to calculate offsetHeight after reflowing the whole document?
– Oded
Nov 6 '13 at 15:02
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Why can I use auto on a private type?
...e itself is still usable, which is why you can return it to client code at all.
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Microsecond timing in JavaScript
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As alluded to in Mark Rejhon's answer, there is an API available in modern browsers that exposes sub-millisecond resolution timing data to script: the W3C High Resolution Timer, aka window.performance.now().
now() is better tha...
Maven: how to override the dependency added by a library
...endency management that have NOT yet been implemented for Maven 2.0, especially with regards to transitive dependencies." at the top.
– wishihadabettername
Oct 14 '10 at 20:30
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How to call function from another file in go language?
I want to call function from another file in go lang, can any one help?
4 Answers
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How to get an array of specific “key” in multidimensional array without looping
...s = array_map(function ($ar) {return $ar['id'];}, $users);
Before(Technically php 4.0.6+), you must create an anonymous function with create_function instead:
$ids = array_map(create_function('$ar', 'return $ar["id"];'), $users);
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How to extract an assembly from the GAC?
There is a package I have to deal with which installs assemblies straight into the GAC (e.g. somewhere deep in %windows%/assembly).
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jQuery - get a list of values of an attribute from elements of a class
I have a class .object which has an attribute called level . I want to get a list of all the different values of level on the page so I can select the highest one.
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