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Is 'switch' faster than 'if'?
...s that correct? If so, isn't that usually slower due to more difficult prefetching/pipelining?
– user541686
Jul 24 '11 at 5:12
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What is difference between Collection.stream().forEach() and Collection.forEach()?
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The VM implementation you choose also makes a difference Hotspot/OpenJ9/etc.
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How important is the order of columns in indexes?
...u picture how the index must be traversed across, column 1, then column 2, etc...you see that lopping off most of the results in the fist pass makes the 2nd step that much faster.
Another case, if you queried on column 3, the optimizer wouldn't even use the index, because it's not helpful at all ...
How do arrays in C# partially implement IList?
... IStructuralComparable, IStructuralEquatable
{
// etc..
}
It implements System.Collections.IList, not System.Collections.Generic.IList<>. It can't, Array is not generic. Same goes for the generic IEnumerable<> and ICollection<> interfaces.
But the CLR ...
Why is “except: pass” a bad programming practice?
...nd tear on your equipment, running out of memory, collecting garbage data, etc.
If other people are asking you to complete so that they can rely on your code, I understand feeling compelled to just handle everything. But if you're willing to fail noisily as you develop, you will have the opportuni...
Fastest sort of fixed length 6 int array
...s (e.g. CUDA - being branchless there are no problems with warp divergence etc).
See also: Fast algorithm implementation to sort very small list
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Left Align Cells in UICollectionView
...ibutes.representedElementCategory == .cell { // Do not modify header views etc.
let indexPath = layoutAttributes.indexPath
// Retrieve the correct frame from layoutAttributesForItem(at: indexPath):
if let newFrame = layoutAttributesForItem(at: indexPath)?.frame {
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How exactly does __attribute__((constructor)) work?
...w would that work?) Instead, on platforms using ELF binary format (Linux, etc.), the constructors and destructors are referenced in the .ctors and .dtors sections of the header. True, in the old days, functions named init and fini would be run on dynamic library load and unload if they existed, bu...
What is Cache-Control: private?
...r" may mean many things: OS user, a browser user (e.g. Chrome's profiles), etc. It's not specified.
For me, a more concrete example of Cache-Control: private is that proxy servers (which typically have many users) won't cache it. It is meant for the end user, and no one else.
FYI, the RFC makes ...
Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
...ws 7, this is no longer true! For reasons of UAC, multiple user sessions, etc. The registry in Windows 7 should be use sparingly and with discretion by developers.
– ryyker
Jun 22 '14 at 15:58
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