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Union Vs Concat in Linq
... (i.e. address in memory). When you create new object via new operator, it allocates memory at new address. So, when you have four new created objects, addresses will be different. And all objects will be distinct. Thus Distinct will return all objects from sequence.
– Sergey B...
Check for column name in a SqlDataReader object
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You're enumerating the field names multiple times / allocating another array to scan with a contains, this would be much less performant in high traffic code.
– Chad Grant
Oct 4 '19 at 17:44
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Java LinkedHashMap get first or last entry
...ent because of the few extra cycles wasted in creating array and the space allocated for the array.
– Durin
May 29 '12 at 15:13
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Does the order of LINQ functions matter?
...icantly faster.
The reduced memory pressure can be significant too, since allocations on the large object heap(together with their collection) are relatively expensive in my experience.
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im...
Best way to convert IList or IEnumerable to Array
...he off chance the enumerable is actually an array, you're skipping the new allocation/copy to steps in the ToArray() call (via the internal Buffer class)...although if anyone expected the "standard" copy behavior, they'd be quite surprised.
– JerKimball
Jun 6 '...
Android: I am unable to have ViewPager WRAP_CONTENT
...views - this is because ViewPager.onMeasure() measures the decor views and allocates space to them first, then gives the remainder of the space to the non-decor children. Nonetheless, this by far the least incorrect solution here so I've upvoted ;)
– Benjamin Dobell
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What's the difference between struct and class in .NET?
...iterator blocks, and the already mentioned boxed values. But stack vs heap allocation is a implementation detail and may be subject to change. Eric lippart discusses this here. I've downvoted, but will happily remove it if you update.
– Simon P Stevens
Oct 29 '...
Perform Segue programmatically and pass parameters to the destination view
...ectAtIndex:[indexPath row]];
StoryModel *storyModel = [[StoryModel alloc] init];
storyModel = storiesDict;
StoryDetails *controller = (StoryDetails *)segue.destinationViewController;
controller.dataModel= storyModel;
}
}
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PyPy — How can it possibly beat CPython?
...zed to literally only be able to emit an integer, and eliminates repeated malloc (memory allocation overhead).
– amcgregor
May 29 '19 at 13:58
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std::string length() and size() member functions
...having,
size==size of those bits,
In strings both are same if the editor allocates size of character is 1 byte
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