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What is the best way to create constants in Objective-C
...ve the same address in memory (depending on how they're declared, they may allocate a new instance every time they're used), so using myObject == MyDefine won't always work as expected, but myObject == MyStaticConst will.
– Ben Leggiero
Mar 10 '16 at 19:47
...
Is inline assembly language slower than native C++ code?
...e-program optimization and inter-procedural optimization such
as register allocation, constant propagation, common subexpression elimination, instruction scheduling and other complex, not obvious optimizations (Polytope model, for example). On RISC architecture guys stopped worrying about this many...
Scala actors: receive vs react
...ead until it receives something. Once it receives something, a thread gets allocated to it, and it is initialized in it.
Now, the initialization part is important. A receiving thread is expected to return something, a reacting thread is not. So the previous stack state at the end of the last react ...
Why do we need tuples in Python (or any immutable data type)?
... variable lives at a different place in memory than when it was originally allocated? This whole business of immutability in Python seems to be over emphasized.
These are different things. Mutability isn't related to the place it's stored in memory; it means the stuff it points to can't change.
...
Awaiting multiple Tasks with different results
...ever(x.Result, y.Result, z.Result);
}
but this does lots of overhead and allocates various arrays (including the params Task[] array) and lists (internally). It works, but it isn't great IMO. In many ways it is simpler to use an async operation and just await each in turn:
async Task<string>...
What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
...em level operations to run this cmd, including context switching, resource allocation, etc.
Note: The example assumes that your command utilizes parallelism/threads.
Detailed man page: https://linux.die.net/man/1/time
shar...
How do I check if a type is a subtype OR the type of an object?
...throws; 3) you don't actually need the new instance, so you have a useless allocation. The accepted answer is better (though not perfect).
– Marcel Popescu
Dec 7 '17 at 19:37
...
Will the base class constructor be automatically called?
...cation.Current.Dispatcher;
//---for some reason this member is not allocated after serialization
if (_properties == null) _properties = new Dictionary<object, string>();
_properties.Clear();
RegisterProperties();
}
#endregion Behavior
#region INoti...
What's the UIScrollView contentInset property for?
...iewDidLoad];
for (int i=0;i<500; i++) {
UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(i * 100, 50, 95, 100)] autorelease];
[label setText:[NSString stringWithFormat:@"label %d",i]];
[self.scroller addSubview:label];
[self.scroller setContentSize:CGSizeMake(self.view....
Is it necessary to explicitly remove event handlers in C#
...e event handlers.
Just because the object is out of scope of its original allocation does not mean it is a candidate for GC. As long as a live reference remains, it is live.
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