Agree, in some case, I seem to find Cchar is really shine at 10x faster than Python from A to Z, 1000x faster than normal Swift? Not sure if there was flaw in the time measurement.
On Sunday, 9 April 2017, Rien <[email protected]> wrote: > Server-side is usually UTF-8 (not always), so often you don’t really need > strings. > As an aside, time measurements are difficult, especially when IO is > involved there may be thread switches or locks. > > I have written some parsers (UTF-8 based) and not yet encountered > performance problems. (though faster is always better) > > Regards, > Rien > > Site: http://balancingrock.nl > Blog: http://swiftrien.blogspot.com > Github: http://github.com/Balancingrock > Project: http://swiftfire.nl - A server for websites build in Swift > > > > > > > > On 08 Apr 2017, at 18:19, Proyb P via swift-users <[email protected] > <javascript:;>> wrote: > > > > I have found this took about 0.001s to print 256 characters > > Compare to Python took 0.000016s to print 256 characters, see F8 code > and have modify to run only one call instead of 1000 iterations. > > https://gist.github.com/anonymous/18e372e8d0173e77b5c405920d4d3080 > > > > As this is frequently use for server-side swift that will definitely > affected by expensive call, are there any alternative solution for > converting Int to character close to Python timing? > > > > import Foundation > > var display: String = "" > > > > func printTimeElapsedWhenRunningCode(title: String, operation: > ()->()) { > > let startTime = CFAbsoluteTimeGetCurrent() > > operation() > > let timeElapsed = CFAbsoluteTimeGetCurrent() - startTime > > print("Time elapsed for \(title): \(timeElapsed) s") > > } > > > > printTimeElapsedWhenRunningCode(title: "s1()") { > > let startingValue = Int(("A" as UnicodeScalar).value) // 65 > > for i in 0 ..< 256 { > > print(Character(UnicodeScalar(i + startingValue)!)) > > } > > } > > _______________________________________________ > > swift-users mailing list > > [email protected] <javascript:;> > > https://lists.swift.org/mailman/listinfo/swift-users > >
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