ResultExtensionsMapReduceT, TOut(IEnumerableT, FuncT, ResTOut) Method

Applies the result mapper to the collection and reduces it to a single result:
  • returns Ok(List<T>) when all results are Ok;
  • Ok(empty list of T) if the collection is empty;
  • the first Err otherwise.

Definition

Namespace: Orx.Fun.Result
Assembly: Orx.Fun.Result (in Orx.Fun.Result.dll) Version: 1.3.0+344c8bdd6f720ccfb2d8db7c61b76cf02be18f5f
C#
public static Res<List<TOut>> MapReduce<T, TOut>(
	this IEnumerable<T> collection,
	Func<T, Res<TOut>> map
)

Parameters

collection  IEnumerableT
Collection of results of T.
map  FuncT, ResTOut
Function that maps each element of the collection to a result.

Type Parameters

T
Type of the underlying values of the collection.
TOut
Type of the underlying values of the mapped results.

Return Value

ResListTOut

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

See Also