Tiny benchmark for scopebuffer

bench_buffer

import scopebuf;
//import std.buffer.scopebuffer;
import std.datetime, std.conv, std.stdio, std.exception;

int do_build(int n)
{
    char[80] store = void;
    auto buf = scopeBuffer(store[]);
    //scope(exit) buf.free();
    for(int i=0; i<n;i++)
        buf.put('X');
    auto ret = buf[];
    int sum = 0;
    for(int i=0; i<n; i++)
        sum += ret[i];
    return sum;
}

void main(string argv[])
{
    int num;
    enforce(argv.length == 2);
    num = to!int(argv[1]);
    StopWatch sw;
    sw.start();
    int total = 0;
    foreach(_; 0..10_000)
        total += do_build(num);
    sw.stop();
    writeln(total, " time: ", sw.peek().usecs, "us");
}