Bug 16647 - Performance improvements in "Join<T> (string separator, IEnumerable<T> values)"
Summary: Performance improvements in "Join<T> (string separator, IEnumerable<T> values)"
Alias: None
Product: Class Libraries
Classification: Mono
Component: mscorlib ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: Untriaged
Assignee: Marek Safar
Depends on:
Reported: 2013-12-06 12:13 UTC by hach22
Modified: 2013-12-06 13:32 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description hach22 2013-12-06 12:13:37 UTC
File:   String.cs
Method: public static string Join<T> (string separator, IEnumerable<T> values)


    var stringList = new List<string> ();
    foreach (var v in values)
           stringList.Add (v.ToString ());

    return JoinUnchecked (separator, stringList.ToArray (), 0, stringList.Count);


    var stringList = values.Select(v => v.ToString()).ToArray();
    return JoinUnchecked (separator, stringList, 0, stringList.Length);
Comment 1 Marek Safar 2013-12-06 13:32:09 UTC
Fixed in master in different way