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Objective-C: difference between id and void *
...dditional semantic differences:
Under GC Only or GC Supported modes, the compiler will emit write barriers for references of type id, but not for type void *. When declaring structures, this can be a critical difference. Declaring iVars like void *_superPrivateDoNotTouch; will cause premature ...
HTML Form: Select-Option vs Datalist-Option
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Also, it has mostly [partial support]((caniuse.com/#feat=datalist) in the other browsers, with bugs such as long datalists becoming unscrollable, etc.
– Govind Rai
Sep 26 '16 at 0:34
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`from … import` vs `import .` [duplicate]
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g.d.d.cg.d.d.c
39.5k88 gold badges8686 silver badges102102 bronze badges
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Converting string to Date and DateTime
...ts
are disambiguated by looking at the
separator between the various
components: if the separator is a
slash (/), then the American m/d/y is
assumed; whereas if the separator is a
dash (-) or a dot (.), then the
European d-m-y format is assumed.
To avoid potential ambiguity, it's ...
How do I clear stuck/stale Resque workers?
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How come this doesn't include a check for whether the worker should be unregistered before calling unregister_worker? Is there a way to determine this?
– user5243421
May 10 '15 at 4:51
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Why does InetAddress.isReachable return false, when I can ping the IP address?
... case, it fails.
//also, this fails for an invalid address, like "www.sjdosgoogle.com1234sd"
InetAddress[] addresses = InetAddress.getAllByName("www.google.com");
for (InetAddress address : addresses) {
if (address.isReachable(10000))
{
System.out...
In Clojure, when should I use a vector over a list, and the other way around?
...de. Good thing answering your own questions is encouraged on Stackoverflow.com :D
I had a quick discussion with Rich Hickey, and here is the gist of it.
[12:21] <Raynes> Vectors aren't seqs, right?
[12:21] <rhickey> Raynes: no, but they are sequential
[12:21] <rhickey> ,(s...
How to determine if a string is a number with C++?
...har c) { return !std::isdigit(c); }) == s.end();
}
As pointed out in the comments below, this only works for positive integers. If you need to detect negative integers or fractions, you should go with a more robust library-based solution. Although, adding support for negative integers is pretty ...
Insert text into textarea with jQuery
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From what you have in Jason's comments try:
$('a').click(function() //this will apply to all anchor tags
{
$('#area').val('foobar'); //this puts the textarea for the id labeled 'area'
})
Edit- To append to text look at below
$('a').click(function(...
Pythonic way to check if a list is sorted or not
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A combo of a couple of the solutions: def isSorted(x, key = lambda x: x): return all([key(x[i]) <= key(x[i + 1]) for i in xrange(len(x) - 1)])
– eacousineau
Sep 27 '11 at 23:26
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