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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
using System;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace Algorithms
{
public static class VectorHelper
{
// Helper to construct a vector from a lambda that takes an
// index. It's not efficient, but it's more succint than the
// corresponding for loop. Don't use it on a hot code path
// (i.e. inside a loop)
[MethodImplAttribute(MethodImplOptions.AggressiveInlining)]
public static Vector<T> Create<T>(Func<int, T> creator) where T : struct
{
T[] data = new T[Vector<T>.Count];
for (int i = 0; i < data.Length; i++)
data[i] = creator(i);
return new Vector<T>(data);
}
// Helper to invoke a function for each element of the
// vector. This is NOT fast. I just like the way it looks
// better than a for loop. Don't use it somewhere that
// performance truly matters
[MethodImplAttribute(MethodImplOptions.AggressiveInlining)]
public static void ForEach<T>(this Vector<T> vec, Action<T, int> op) where T : struct
{
for (int i = 0; i < Vector<T>.Count; i++)
op(vec[i], i);
}
}
}
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