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Is a RelativeLayout more expensive than a LinearLayout?
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In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is negligible as long as your view hierarchy ...
What does the restrict keyword mean in C++?
...g
A restrict-qualified pointer (or reference)...
! ...is basically a
promise to the compiler that for the
scope of the pointer, the target of the pointer will only
be accessed through that pointer (and pointers copied
from it).
In C++ compilers that support it ...
Compression/Decompression string with C#
... I just want to emphasize that the GZipStream must be disposed before calling ToArray() on the output stream. I ignored that bit, but it makes a difference!
– Wet Noodles
Jan 23 '14 at 19:41
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How to remove css property in jQuery
...olution here that satisfies the OP. Most of the solutions suggest getting rid of the entire style attribute which is not worth it.
I used jQuery's prop method.
var styleObject = $('my-selector').prop('style');
styleObject.removeProperty('background-color');
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What's a correct and good way to implement __hash__()?
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Aside from the minor overhead from factoring out the __key function, this is about as fast as any hash can be. Sure, if the attributes are known to be integers, and there aren't too many of them, I suppose you could potentially...
Why malloc+memset is slower than calloc?
It's known that calloc is different than malloc in that it initializes the memory allocated. With calloc , the memory is set to zero. With malloc , the memory is not cleared.
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How can I get a JavaScript stack trace when I throw an exception?
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Edit 2 (2017):
In all modern browsers you can simply call: console.trace(); (MDN Reference)
Edit 1 (2013):
A better (and simpler) solution as pointed out in the comments on the original question is to use the stack property of an Error object like so:
function stackTrace() {...
How to monitor network calls made from iOS Simulator
I am trying to monitor calls from an app to my server just like Firebug does.
I could not find a way to see that in iOS Simulator or in xCode.
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Why would you ever implement finalize()?
..., file, etc). Implement a close() method and document that it needs to be called.
Implement finalize() to do the close() processing if you detect it hasn't been done. Maybe with something dumped to stderr to point out that you're cleaning up after a buggy caller.
It provides extra safety in an ex...
What is the use of making constructor private in a class?
...lared public, others private. For reducing code size, public constructors 'call' private constructors which in turn do all the work. Your public constructors are thus called delegating constructors:
class MyClass
{
public:
MyClass() : MyClass(2010, 1, 1) { }
private:
MyClass(int theYear, int t...