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ListValueTypeWhereSelect.cs
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ListValueTypeWhereSelect.cs
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using System.Runtime.InteropServices;
using ListExtensions = Faslinq.ListExtensions;
// ReSharper disable ForeachCanBeConvertedToQueryUsingAnotherGetEnumerator
// ReSharper disable LoopCanBeConvertedToQuery
// ReSharper disable ForCanBeConvertedToForeach
namespace LinqBenchmarks.List.ValueType;
public class ListValueTypeWhereSelect: ValueTypeListBenchmarkBase
{
[Benchmark(Baseline = true)]
public FatValueType ForLoop()
{
var sum = default(FatValueType);
for (var index = 0; index < source.Count; index++)
{
var item = source[index];
if (item.IsEven())
sum += (item * 3);
}
return sum;
}
#pragma warning disable HLQ010 // Consider using a 'for' loop instead.
[Benchmark]
public FatValueType ForeachLoop()
{
var sum = default(FatValueType);
foreach (var item in source)
{
if (item.IsEven())
sum += (item * 3);
}
return sum;
}
#pragma warning restore HLQ010 // Consider using a 'for' loop instead.
[Benchmark]
public FatValueType Linq()
{
var items = System.Linq.Enumerable
.Where(source, item => item.IsEven())
.Select(item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType LinqFaster()
{
var items = source.WhereSelectF(item => item.IsEven(), item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType LinqFasterer()
{
var items = EnumerableF.SelectF(EnumerableF.WhereF(source, item => item.IsEven()), item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType LinqAF()
{
var items = global::LinqAF.ListExtensionMethods
.Where(source, item => item.IsEven())
.Select(item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
#if DOTNET5_0_OR_GREATER
[Benchmark]
public FatValueType SpanLinq()
{
var items = CollectionsMarshal.AsSpan(source)
.Where(item => item.IsEven())
.Select(item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
#endif
[Benchmark]
public FatValueType StructLinq()
{
var items = source
.ToRefStructEnumerable()
.Where((in FatValueType item) => item.IsEven())
.Select((in FatValueType item) => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType StructLinq_ValueDelegate()
{
var predicate = new FatValueTypeIsEven();
var selector = new TripleOfFatValueType();
var items = source
.ToRefStructEnumerable()
.Where(ref predicate, x => x)
.Select(ref selector, x => x, x => x);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType Hyperlinq()
{
var items = source.AsValueEnumerable()
.Where(item => item.IsEven())
.Select(item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType Hyperlinq_ValueDelegate()
{
var items = source.AsValueEnumerable()
.Where<FatValueTypeIsEven>()
.Select<FatValueType, TripleOfFatValueType>();
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}
[Benchmark]
public FatValueType Faslinq()
{
var items =
ListExtensions.WhereSelect(
source,
item => item.IsEven(),
item => item * 3);
var sum = default(FatValueType);
foreach (var item in items)
sum += item;
return sum;
}}