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Getting time elapsed in Objective-C
...er to use Apple's function CACurrentMediaTime!
I also benchmarked the mach_timebase_info call and it takes approximately 19ns on my iPhone 6, so I removed the (not threadsafe) code which was caching the output of that call.
#include <mach/mach.h>
#include <mach/mach_time.h>
uint64_t g...
Is there a performance difference between i++ and ++i in C?
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Executive summary: No.
i++ could potentially be slower than ++i, since the old value of i
might need to be saved for later use, but in practice all modern
compilers will optimize this away.
We can demonstrate this by looking at the code for this function,
both wit...
Add Bootstrap Glyphicon to Input Box
...in Plunker
Note: This presumes you're using glyphicons, but works equally well with font-awesome.
For FA, just replace .glyphicon with .fa
With Bootstrap:
As buffer points out, this can be accomplished natively within Bootstrap by using Validation States with Optional Icons. This is do...
Cost of exception handlers in Python
...faster than an explicit if as long as the condition is not met.
But it's all within the same order of magnitude and unlikely to matter either way. Only if the condition is actually met, then the if version is significantly faster.
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What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
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Microsoft has a blog entry What AnyCPU Really Means As Of .NET 4.5 and Visual Studio 11:
In .NET 4.5 and Visual Studio 11 the cheese has been moved. The
default for most .NET projects is again AnyCPU, but there is more than
one meaning to AnyCPU now. There i...
How to modify list entries during for loop?
...> ['a', 'c '] # WRONG!
(The result is wrong because it didn't delete all the items it should have.)
Update
Since this is a fairly popular answer, here's how to effectively delete entries "in-place" (even though that's not exactly the question):
b = ['a',' b', 'c ', ' d ']
b[:] = [entry fo...
Scroll Element into View with Selenium
...rowser? There is a focus method in Selenium, but it does not seem to physically scroll the view in FireFox. Does anyone have any suggestions on how to do this?
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How to make a element expand or contract to its parent container?
...its parent container, in this case a <div> , no matter how big or small that container may be.
5 Answers
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Regex to match only letters
...pends on what definition of "latin character" you choose. J, U, Ö, Ä can all be argued to be latin characters or not, based on your definition. But they are all used in languages that use the "latin alphabet" for writing.
– Joachim Sauer
Sep 1 '10 at 12:23
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How can I get the actual stored procedure line number from an error message?
...assume that the difference is due to white space and comments, but is it really?
8 Answers
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