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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
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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...
Getting JavaScript object key list
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I don't suppose Javascript is like PHP, where you can skip the first line altogether? Not that something like that is advisable to do anyway.
– Bart van Heukelom
Jun 18 '10 at 9:45
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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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How to update column with null value
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Now, let me clarify. Through php I am using PDO and updating through a query.
– jim
Oct 6 '10 at 8:13
1
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Calculate the median of a billion numbers
...on of the numbers, especially a range.
2) Instead of sorting the values, allocate them to buckets based on the distribution you just calculated. The number of buckets is chosen so that the computer can handle them efficiently, but should otherwise be as large as convenient. The bucket ranges shoul...