19 replies

Understanding the Return Type of Effect/Option's `tap()` Function

Hello all,

I have a piece of code that looks like this:

if (Option.isSome(someOption)) { doWork(someOption.value) }

if (Option.isSome(someOption)) { doWork(someOption.value) }

There Effect/Option package defines a

tap()

tap()

function which has basically the same functionality. My idea was to replace the previous code with the following:

Option.tap(someOption, someValue => doWork(someValue))

Option.tap(someOption, someValue => doWork(someValue))

However, the

function parameter in

tap()

tap()

f: (a: A) => Option<_>

f: (a: A) => Option<_>

have a return type? Shouldn't the return type be

void

void