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@HaloFour HaloFour/Decomposition.cs

Last active Mar 7, 2016
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Decomposition Microbenchmark
using System;
using System.Diagnostics;
public struct ValueTuple<T1, T2> {
public T1 Item1;
public T2 Item2;
public ValueTuple(T1 item1, T2 item2) {
this.Item1 = item1;
this.Item2 = item2;
}
}
public class Record {
public int X { get; }
public int Y { get; }
public Record(int x, int y) {
this.X = x;
this.Y = y;
}
public void Decompose(out int x, out int y) {
x = this.X;
y = this.Y;
}
public ValueTuple<int, int> DecomposeTuple() {
return new ValueTuple<int, int>(X, Y);
}
public static bool Decompose(Record record, out int x, out int y) {
if (record == null) {
x = 0;
y = 0;
return false;
}
x = record.X;
y = record.Y;
return true;
}
public static ValueTuple<int, int>? DecomposeTuple(Record record) {
if (record == null) {
return null;
}
return new ValueTuple<int, int>(record.X, record.Y);
}
}
static class Program {
static void Main() {
const int ITERATIONS = 1000000000;
Stopwatch stopwatch = new Stopwatch();
Record record = new Record(2, 3);
stopwatch.Start();
for (int i = 0; i < ITERATIONS; i++) {
bool result = (record.X == 5 && record.Y == 3);
}
stopwatch.Stop();
Console.WriteLine($"Properties: {stopwatch.Elapsed}");
stopwatch.Restart();
for (int i = 0; i < ITERATIONS; i++) {
int x, y;
record.Decompose(out x, out y);
bool result = (x == 5 && y == 3);
}
stopwatch.Stop();
Console.WriteLine($"Inst Decom: {stopwatch.Elapsed}");
stopwatch.Restart();
for (int i = 0; i < ITERATIONS; i++) {
ValueTuple<int, int> tuple = record.DecomposeTuple();
bool result = (tuple.Item1 == 5 && tuple.Item2 == 3);
}
stopwatch.Stop();
Console.WriteLine($"Inst Tuple: {stopwatch.Elapsed}");
stopwatch.Restart();
for (int i = 0; i < ITERATIONS; i++) {
int x, y;
Record.Decompose(record, out x, out y);
bool result = (x == 5 && y == 3);
}
stopwatch.Stop();
Console.WriteLine($"Stat Decom: {stopwatch.Elapsed}");
stopwatch.Restart();
for (int i = 0; i < ITERATIONS; i++) {
ValueTuple<int, int>? tuple = Record.DecomposeTuple(record);
bool result = (tuple != null && tuple.Value.Item1 == 5 && tuple.Value.Item2 == 3);
}
stopwatch.Stop();
Console.WriteLine($"Stat Tuple: {stopwatch.Elapsed}");
}
}
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