whenIsSelectedOtherwise

Runs a matching callback for selected Either informations and an otherwise callback for every unselected raw input.

Interactive example

Syntax

Classic signature

function whenIsSelectedOtherwise<
  GenericInput,
  GenericSelector,
  GenericOutput,
  GenericOtherwiseOutput
>(
  input: GenericInput,
  selector: GenericSelector,
  theFunction: (value: UnwrappedMatchingInput) => GenericOutput,
  otherwiseFunction: (value: Exclude<RawInput, MatchingInput>) => GenericOtherwiseOutput
): GenericOutput | GenericOtherwiseOutput;

Curried signature

function whenIsSelectedOtherwise<
  GenericInput,
  GenericSelector,
  GenericOutput,
  GenericOtherwiseOutput
>(
  selector: GenericSelector,
  theFunction: (value: UnwrappedMatchingInput) => GenericOutput,
  otherwiseFunction: (value: Exclude<RawInput, MatchingInput>) => GenericOtherwiseOutput
): (input: GenericInput) => GenericOutput | GenericOtherwiseOutput;

Parameters

• selector: Exhaustive map assigning true or false to every possible information.
• theFunction: Callback receiving an unwrapped selected payload.
• otherwiseFunction: Callback receiving the original raw unselected input.
• input: Value processed immediately, or later with the curried form.

Return value

Returns the result of the matching callback when the condition succeeds; otherwise, it returns the result of otherwiseFunction. The otherwise callback always receives the original raw input.

See also

• whenIsSelected - Same condition without an explicit otherwise callback.