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When to use StringBuilder in Java [duplicate]
...te code. Also I was a bit sceptic about big performance increase as object allocation is so cheap now. HOWEVER switching to explicit StringBuilder 1 instance gave me 0-1ms from ~120ms on 1000 iterations. So StringBuilder is still necessary for critical places in similar cases.
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Super slow lag/delay on initial keyboard animation of UITextField
...n initial keyboard appearance.
UITextField *lagFreeField = [[UITextField alloc] init];
[self.window addSubview:lagFreeField];
[lagFreeField becomeFirstResponder];
[lagFreeField resignFirstResponder];
[lagFreeField removeFromSuperview];
}
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Loaded nib but the 'view' outlet was not set
...he rolling code:
PTFilterUserVC *aFilterUserVC = [[PTFilterUserVC alloc] initWithNibName:@"FilterVC" bundle:nil];
//OPTIONAL.This is how 'I' am interested in present the view controller.
[self.navigationController pushViewController:aFilterUserVC animated:YES];
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What is that “total” in the very first line after ls -l? [closed]
...he files with a line
`total BLOCKS', where BLOCKS is the total disk allocation for all
files in that directory.
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Handling applicationDidBecomeActive - “How can a view controller respond to the app becoming Active?
...longer need notifications, or when your observer instance is going to be deallocated in the deinit method
– igrek
Feb 20 '18 at 15:35
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A generic list of anonymous class
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Thanks for the idea. A suggestion, you can avoid allocating a dummy list if you use Enumerable.Empty<object>().Select(o=>definition).ToList()
– BrainStorm.exe
Jan 25 '19 at 17:01
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How to convert a Map to List in Java?
...dent on the underlying Map; by making a copy constructor call instead, you allocate storage and copy the values into that storage, thus breaking the connection...
– Sheldon R.
Nov 22 '13 at 16:14
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AddRange to a Collection
... efficient than the List<T> version (since the list<T> can pre-allocate)
– Reed Copsey
Sep 25 '09 at 1:12
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Extract digits from a string in Java
...der constructor (such as input.length()) to ensure that it won't need to reallocate. You don't need to demand a String here; CharSequence suffices. Also, you can separate the allocation of the StringBuilder from the collection of non-digits by writing a separate function that accepts a CharSequence ...
In Android, how do I set margins in dp programmatically?
...droid:layout_margin="10dp", the child is pleading the parent view group to allocate space that is 10dp bigger than its actual size. (padding="10dp", on the other hand, means the child view will make its own content 10dp smaller.)
Consequently, not all ViewGroups respect margin. The most notorious e...