MoreEnumerableFillForwardT(IEnumerableT, FuncT, Boolean, FuncT, T, T) Method

Returns a sequence with each missing element in the source replaced with one based on the previous non-missing element seen in that sequence. Additional parameters specify two functions, one used to determine if an element is considered missing or not and another to provide the replacement for the missing element.

Definition

Namespace: MoreLinq
Assembly: MoreLinq (in MoreLinq.dll) Version: 3.4.0+b99a6a8cc504caf2d48372fe54a2f8116c59cd0c
C#
public static IEnumerable<T> FillForward<T>(
	this IEnumerable<T> source,
	Func<T, bool> predicate,
	Func<T, T, T> fillSelector
)

Parameters

source  IEnumerableT
The source sequence.
predicate  FuncT, Boolean
The function used to determine if an element in the sequence is considered missing.
fillSelector  FuncT, T, T
The function used to produce the element that will replace the missing one. Its first argument receives the current element considered missing while the second argument receives the previous non-missing element.

Type Parameters

T
Type of the elements in the source sequence.

Return Value

IEnumerableT
An IEnumerableT with missing values replaced.

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).

Remarks

This method uses deferred execution semantics and streams its results. If elements are missing at the start of the sequence then they remain missing.

See Also