FruityFoundation/Base/Structures/EnumerableExtensions.cs

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2023-08-01 22:12:54 -04:00
using System;
using System.Collections.Generic;
using System.Linq;
namespace FruityFoundation.Base.Structures;
public static class EnumerableExtensions
{
public static IEnumerable<T> ConditionalConcat<T>(this IEnumerable<T> enumerable, bool condition, IEnumerable<T> second) =>
!condition ? enumerable : enumerable.Concat(second);
public static IEnumerable<T> ConditionalAppend<T>(this IEnumerable<T> enumerable, bool condition, T second) =>
condition ? enumerable.Append(second) : enumerable;
public static IEnumerable<T> ConditionalAppend<T>(this IEnumerable<T> enumerable, Maybe<T> item) =>
item.HasValue ? enumerable.Append(item.Value) : enumerable;
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public static IEnumerable<T> ConditionalWhere<T>(this IEnumerable<T> enumerable, bool condition, Func<T, bool> pred) =>
!condition ? enumerable : enumerable.Where(pred);
public static IEnumerable<TOutput> Choose<TInput, TOutput>(this IEnumerable<TInput> enumerable, Func<TInput, Maybe<TOutput>> chooser) =>
enumerable.Select(chooser).Where(x => x.HasValue).Select(x => x.Value);
}