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Nested attributes unpermitted parameters
...[:id, :name, :category])
Some more details can be found in the Ruby edge API docs and strong_parameters on github or here
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Is PHP's count() function O(1) or O(n) for arrays?
...m_elements() for non-recursive array, which is implemented this way:
ZEND_API int zend_hash_num_elements(const HashTable *ht)
{
IS_CONSISTENT(ht);
return ht->nNumOfElements;
}
So you can see, it's O(1) for $mode = COUNT_NORMAL.
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How to find out which JavaScript events fired?
...
Regarding Chrome, checkout the monitorEvents() via the command line API.
Open the console via Menu > Tools > JavaScript Console.
Enter monitorEvents(window);
View the console flooded with events
...
mousemove MouseEvent {dataTransfer: ...}
mouseout MouseEvent {dataTransfer: ...}
mou...
Why doesn't JavaScript support multithreading?
...ou can use it with --experimental-worker flag enabled): https://nodejs.org/api/worker_threads.html
So, the rule is:
if you need to do I/O bound ops, then use the internal mechanism (aka callback/promise/async-await)
if you need to do CPU bound ops, then use worker threads.
Worker threads are in...
Is it possible to select the last n items with nth-child?
...are willing to include it you can call nth-last-child through its selector API (this is this simulated it will cross browser). Here is a link to an nth-last-child plugin. If you took this method of targeting the elements you were interested in:
$('ul li:nth-last-child(1)').addClass('last');
And ...
How to set DialogFragment's width and height?
....setView(view);
return builder.create();
}
Bonus
On Older Android APIs, Dialogs seem to have some width issues, because of their title (even if you don't set one).
If you don't want to use ThemeOverlay.AppCompat.Dialog style and your Dialog doesn't need a title (or has a custom one), you mi...
How do I find out if first character of a string is a number?
... This solution does not work since String.matches and Pattern API tries to match complete string and not just first character
– Amrish Pandey
Apr 21 '15 at 9:23
a...
The data-toggle attributes in Twitter Bootstrap
...attributes do in Twitter Bootstrap? I couldn't find an answer in Bootstrap API.
10 Answers
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When NOT to use Cassandra?
...iginal Java Cassandra, while being mostly compatible with it (in features, APIs, and file formats). So if you're already considering Cassandra, you may want to consider Scylla as well.
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How different is Objective-C from C++? [closed]
..., just not for objects. You can use any C-style pointer in Obj-C, and many API calls actually pass or return values by reference, in which case NULL is frequently used.
– Quinn Taylor
Mar 16 '10 at 2:49
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