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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...
Android activity life cycle - what are all these methods for?
...te
Stopped state
Starting state involves:
Creating a new Linux process, allocating new memory for the new UI objects, and setting up the whole screen. So most of the work is involved here.
Running state involves:
It is the activity (state) that is currently on the screen. This state alone handl...
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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Use C++ with Cocoa Instead of Objective-C?
... cppInstance = new MyCPPClass();
}
return self;
}
- (void) dealloc {
if(cppInstance != NULL) delete cppInstance;
[super dealloc];
}
- (void)callCpp {
cppInstance->SomeMethod();
}
@end
You can find out more about Objective-C++ in the Objective-C language guide. The view...
pandas: How do I split text in a column into multiple rows?
...t(' ')[i]) for i in range(3)]))).head()"
The second simply refrains from allocating 100 000 Series, and this is enough to make it around 10 times faster. But the third solution, which somewhat ironically wastes a lot of calls to str.split() (it is called once per column per row, so three times mor...
Logger slf4j advantages of formatting with {} instead of string concatenation
...tring-builder calls, resulting in much faster code that doesn't do as much allocation.
– cdeszaq
Jan 28 '19 at 19:18
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