whenIsOptionalEmptyOtherwise

Runs one callback for OptionalEmpty values and an otherwise callback for every remaining raw input.

Interactive example

Syntax

Classic signature

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

Curried signature

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

Parameters

• theFunction: Callback receiving the unwrapped value when the condition matches.
• otherwiseFunction: Callback receiving the original raw input when the condition does not match.
• input: Raw value or Either 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

• whenIsOptionalEmpty - Same condition without an explicit otherwise callback.