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What is the best way to initialize a JavaScript Date to midnight?
...rs(0,0,0,0);
That will set the time to 00:00:00.000 of your current timezone, if you want to work in UTC time, you can use the setUTCHours method.
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What is the JavaScript convention for no operation?
...ere might be some performance issues associated with this (as is also mentioned by others in comments or in other answers).
However, that being said, you can easily define your own noop function and, infact, many libraries and frameworks also provide noop functions. Below are some examples:
var no...
Side-by-side plots with ggplot2
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One downside of the solutions based on grid.arrange is that they make it difficult to label the plots with letters (A, B, etc.), as most journals require.
I wrote the cowplot package to solve this (and a few other) issues, s...
How do I check if a string contains a specific word?
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You can use the strpos() function which is used to find the occurrence of one string inside another one:
$a = 'How are you?';
if (strpos($a, 'are') !== false) {
echo 'true';
}
Note that the use of !== false is deliberate (neither != false nor === true will return the desired result); strpos()...
How to implement a queue with three stacks?
... this link: http://www.eecs.usma.edu/webs/people/okasaki/jfp95/index.html
One of them is O(1) with three stacks BUT it uses lazy execution, which in practice creates extra intermediate data structures (closures).
Another of them is O(1) but uses SIX stacks. However, it works without lazy execution...
Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
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One more minor thing that tripped me up: in boost, destructor of a running thread detaches it ( boost.org/doc/libs/1_47_0/doc/html/thread/… ), while in C++, destructor of a running thread calls terminate() (FDIS 30.3.1.3)
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Animate change of view controllers without using navigation controller stack, subviews or modal cont
... }];
}
Example use in a view controller
- (IBAction)flipToNextView
{
AnotherViewController *anotherVC = [[AnotherVC alloc] init...];
MyAppDelegate *appDelegate = (MyAppDelegate *)[UIApplication sharedApplication].delegate;
[appDelegate transitionToViewController:another...
How do you manage databases in development, test, and production?
...ersion is readable also at http://martinfowler.com/articles/evodb.html
In one PHP+MySQL project I've had the database revision number stored in the database, and when the program connects to the database, it will first check the revision. If the program requires a different revision, it will open a...
How was the first compiler written?
... program in opcodes directly by looking them up from a table (such as this one for the 6039 microprocessor, for example) that lists them with the matching assembly instructions, and hand-determining memory addresses/offsets for things like jumps.
The first programs were done in exactly this fashion...
How do I undo “Scope to this” in Visual Studio 2012?
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Click the "Home" icon (third one by default, the one with a house pictogram) in the Solution explorer. This will revert the view to the full solution.
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