Помогите найти: Сравнение производительности различных операндов при конкатенации строк

[kashperuk]

Цитата:

Сообщение от Logger

Ваня, может выложишь джоб сюда ?
Привинтим еще StringBuilder и сравним.

class RunnableClass1
{        
    const int StringSite = 100000;

	public static Int64 PlusEquals()
    {
        System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();

        stopWatch.Restart();
        str s;
        for (int i = 1; i <= StringSite; i+=5)
        {
            s += int2Str(i);
            s += int2Str(i+1);
            s += int2Str(i+2);
            s += int2Str(i+3);
            s += int2Str(i+4);
        }

        var runtime = stopWatch.ElapsedMilliseconds;
        stopWatch.Stop();

        return runtime;
    }

    public static Int64 Plus()
    {
        System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();

        stopWatch.Restart();
        str s;
        for (int i = 1; i <= StringSite; i+=5)
        {
            s = s + int2Str(i) + int2Str(i+1) + int2Str(i+2) + int2Str(i+3) + int2Str(i+4);
        }

        var runtime = stopWatch.ElapsedMilliseconds;
        stopWatch.Stop();

        return runtime;
    }

    public static Int64 ThruStrFmt()
    {
        System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();

        stopWatch.Restart();
        str s;

        for (int i = 1; i <= StringSite; i+=5)
        {
            s = strFmt('%1%2%3%4%5%6', s, int2Str(i), int2Str(i+1), int2Str(i+2), int2Str(i+3), int2Str(i+4));
        }

        var runtime = stopWatch.ElapsedMilliseconds;
        stopWatch.Stop();

        return runtime;
    }

    public static Int64 ThruTextBuffer()
    {
        System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();

        stopWatch.Restart();

        TextBuffer tb = new TextBuffer();

        for (int i = 1; i <= StringSite; i+=5)
        {
            tb.appendText(int2Str(i));
            tb.appendText(int2Str(i+1));
            tb.appendText(int2Str(i+2));
            tb.appendText(int2Str(i+3));
            tb.appendText(int2Str(i+4));
        }

        tb.getText();

        var runtime = stopWatch.ElapsedMilliseconds;
        stopWatch.Stop();

        return runtime;
    }

    /// <summary>
    /// Runs the class with the specified arguments.
    /// </summary>
    /// <param name = "_args">The specified arguments.</param>
    public static void main(Args _args)
    {   
        Box::info("START");
        info(strFmt("+= took %1 ms", RunnableClass1::PlusEquals()));
        info(strFmt("+ took %1 ms", RunnableClass1::Plus()));
        info(strFmt("strFmt took %1 ms", RunnableClass1::ThruStrFmt()));
        info(strFmt("TextBuffer took %1 ms", RunnableClass1::ThruTextBuffer()));
        Box::info("DONE");
    }

}