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How to get object size in memory? [duplicate]
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Lists in C# are preallocated to whatever sizes the framework designers decided to go with, and then increased when needed. By default it's probably something like 10 elements. So you won't notice any size difference until you add enough element...
What's the Android ADB shell “dumpsys” tool and what are its benefits?
...ther total
size: 2868 5767 N/A 8635
allocated: 2861 2891 N/A 5752
free: 6 2876 N/A 2882
(Pss): 532 80 2479 3091
(shared dirty): 932 2004 6060 8996
(priv dirty)...
How do I print to the debug output window in a Win32 app?
...GL project), you don't need to edit the properties, as this works better:
AllocConsole();
freopen("CONIN$", "r",stdin);
freopen("CONOUT$", "w",stdout);
freopen("CONOUT$", "w",stderr);
printf and cout will work as usual.
If you call AllocConsole before the creation of a window, the console will a...
What are the differences between vector and list data types in R?
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As someone who's just gotten into R, but comes from a C/Java/Ruby/PHP/Python background, here's how I think of it.
A list is really an array + a hashmap. It's a PHP associative array.
> foo = list(bar='baz')
> foo[1]
'baz'
> foo$bar
'baz'
> foo[['bar']]
'baz'
A vector is a f...
How to identify CAAnimation within the animationDidStop delegate?
... wasted hours): don't expect to see the original animation object that you allocated passed back to you by
- (void)animationDidStop:(CAAnimation*)animation finished:(BOOL)flag
when the animation finishes, because [CALayer addAnimation:forKey:] makes a copy of your animation.
What you can rely ...
What exactly are “spin-locks”?
...als), making statically dispatched calls into any code one doesn't own, or allocating memory.
It's also important to note that SpinLock is a value type, for performance reasons. As such, one must be very careful not to accidentally copy a SpinLock instance, as the two instances (the original and the...
Node.js throws “btoa is not defined” error
... is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
– Rodrigo De Almeida Siqueira
Jun 13 '19 at 13:14
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What is managed or unmanaged code in programming?
...hine it's running on, and creates a secure boundary in which all memory is allocated indirectly, and generally speaking, you don't have direct access to machine resources like ports, memory address space, the stack, etc. The idea is to run in a more secure environment.
To convert from a managed v...
In STL maps, is it better to use map::insert than []?
...es") and are destroyed.
Which means extra time for:
1. One objects memory allocation
2. One extra constructor call
3. One extra destructor call
4. One objects memory deallocation
If your objects are large, constructors are typical, destructors do a lot of resource freeing, above points count even ...
Rails migration for has_and_belongs_to_many join table
...he table gets really big then you may want to be able to save space by not allocating another id for each relationship.
– docwhat
Jun 5 '11 at 3:39
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