/// <seealso cref="MonadPlus.Lift{T1, T2, T3, T4, T5, TResult}"/> public static MonadPlus <TResult> ZipWith <T1, T2, T3, T4, T5, TResult>( this MonadPlus <T1> @this, MonadPlus <T2> second, MonadPlus <T3> third, MonadPlus <T4> fourth, MonadPlus <T5> fifth, Func <T1, T2, T3, T4, T5, TResult> zipper) { Require.NotNull(@this, nameof(@this)); Require.NotNull(second, nameof(second)); Require.NotNull(third, nameof(third)); Require.NotNull(fourth, nameof(fourth)); Require.NotNull(fifth, nameof(fifth)); Require.NotNull(zipper, nameof(zipper)); // > return @this.Bind( // > arg1 => second.Bind( // > arg2 => third.Bind( // > arg3 => fourth.Bind( // > arg4 => fifth.Select( // > arg5 => zipper(arg1, arg2, arg3, arg4, arg5)))))); return(@this.Bind( arg1 => second.ZipWith( third, fourth, fifth, (arg2, arg3, arg4, arg5) => zipper(arg1, arg2, arg3, arg4, arg5)))); }
public static MonadPlus <TResult> ContinueWith <TSource, TResult>( this MonadPlus <TSource> @this, MonadPlus <TResult> other) { Require.NotNull(@this, nameof(@this)); return(@this.Bind(_ => other)); }
public static MonadPlus <TSource> Where <TSource>( this MonadPlus <TSource> @this, Func <TSource, bool> predicate) { Require.NotNull(@this, nameof(@this)); Require.NotNull(predicate, nameof(predicate)); return(@this.Bind(val => predicate(val) ? MonadPlus <TSource> .η(val) : MonadPlus <TSource> .Zero)); }
public static MonadPlus <TResult> Select <TSource, TResult>( this MonadPlus <TSource> @this, Func <TSource, TResult> selector) { Require.NotNull(@this, nameof(@this)); Require.NotNull(selector, nameof(selector)); return(@this.Bind(val => MonadPlus <TResult> .η(selector(val)))); }
/// <seealso cref="Apply{TSource, TResult}(MonadPlus{Func{TSource, TResult}}, MonadPlus{TSource})" /> public static MonadPlus <TResult> Gather <TSource, TResult>( this MonadPlus <TSource> @this, MonadPlus <Func <TSource, TResult> > applicative) { Require.NotNull(@this, nameof(@this)); Require.NotNull(applicative, nameof(applicative)); return(applicative.Bind(func => @this.Select(func))); }
// Bind() with automatic resource management. public static MonadPlus <TResult> Using <TSource, TResult>( this MonadPlus <TSource> @this, Func <TSource, MonadPlus <TResult> > binder) where TSource : IDisposable { Require.NotNull(@this, nameof(@this)); Require.NotNull(binder, nameof(binder)); return(@this.Bind(val => { using (val) { return binder(val); } })); }
// Generalizes both Bind() and ZipWith<T1, T2, TResult>(). public static MonadPlus <TResult> SelectMany <TSource, TMiddle, TResult>( this MonadPlus <TSource> @this, Func <TSource, MonadPlus <TMiddle> > selector, Func <TSource, TMiddle, TResult> resultSelector) { Require.NotNull(@this, nameof(@this)); Require.NotNull(selector, nameof(selector)); Require.NotNull(resultSelector, nameof(resultSelector)); return(@this.Bind( val => selector(val).Select( middle => resultSelector(val, middle)))); }
/// <seealso cref="MonadPlus.Lift{T1, T2, TResult}"/> public static MonadPlus <TResult> ZipWith <T1, T2, TResult>( this MonadPlus <T1> @this, MonadPlus <T2> second, Func <T1, T2, TResult> zipper) { Require.NotNull(@this, nameof(@this)); Require.NotNull(second, nameof(second)); Require.NotNull(zipper, nameof(zipper)); return(@this.Bind( arg1 => second.Select( arg2 => zipper(arg1, arg2)))); }
/// <seealso cref="MonadPlus.Lift{T1, T2, T3, TResult}"/> public static MonadPlus <TResult> ZipWith <T1, T2, T3, TResult>( this MonadPlus <T1> @this, MonadPlus <T2> second, MonadPlus <T3> third, Func <T1, T2, T3, TResult> zipper) { Require.NotNull(@this, nameof(@this)); Require.NotNull(second, nameof(second)); Require.NotNull(third, nameof(third)); Require.NotNull(zipper, nameof(zipper)); // This is the same as: // > return @this.Bind( // > arg1 => second.Bind( // > arg2 => third.Select( // > arg3 => zipper(arg1, arg2, arg3)))); // but faster if ZipWith is locally shadowed. return(@this.Bind( arg1 => second.ZipWith( third, (arg2, arg3) => zipper(arg1, arg2, arg3)))); }
internal static MonadPlus <T> μ(MonadPlus <MonadPlus <T> > square) => square.Bind(Stubs <MonadPlus <T> > .Ident);