Created
November 29, 2023 02:30
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.Net ImmutableList<T> Benchmarks
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const int SIZE = 1_000_000; | |
const int HALF_SIZE = 500_000; | |
[Benchmark] | |
public void ms_mutable_list() | |
{ | |
var ms_list = new List<int>(); | |
for (int i = 0; i < SIZE; i++) ms_list.Add(i); | |
} | |
[Benchmark] | |
public void ms_builder_good() | |
{ | |
var ms_list = ImmutableList<int>.Empty; | |
var builder = ms_list.ToBuilder(); | |
for (int i = 0; i < SIZE; i++)builder.Add(i); | |
ms_list = builder.ToImmutableList(); | |
} | |
[Benchmark] | |
public void ms_builder_bad() | |
{ | |
var ms_list = ImmutableList<int>.Empty; | |
for (int i = 0; i < SIZE; i++) | |
{ | |
var builder = ms_list.ToBuilder(); | |
builder.Add(i); | |
ms_list = builder.ToImmutableList(); | |
} | |
} | |
[Benchmark] | |
public void ms_builder_unpack() | |
{ | |
var ms_list = ImmutableList<int>.Empty; | |
var builder = ms_list.ToBuilder(); | |
for (int i = 0; i < HALF_SIZE; i++) builder.Add(i); | |
ms_list = builder.ToImmutableList(); | |
builder = ms_list.ToBuilder(); | |
for (int i = HALF_SIZE; i < SIZE; i++) builder.Add(i); | |
ms_list = builder.ToImmutableList(); | |
} |
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