I had been puzzled by the name of the `tap` operators for quite a while, until I realized that maybe...

# arrow

[julian]

I had been puzzled by the name of the tap operators for quite a while, until I realized that maybe it wasn't meant to denote "knock" (like knock/tap on the door), but rather "faucet".
This may be the result of living in the US where no one says "tap"; they say "faucet". And while "tap" is also a verb, "faucet" is always a noun. To "tap" is to "runTheFaucet" in the US.
Wikipedia says:

Faucet is the most common term in the US, similar in use to "tap" in British English

blob shrug

[simon.vergauwen]

The functionality was originally also requested with the name tap as a suggestion, and many contributors were already familiar with that name from Scala.

I think the name tap comes from the fact that it _tap_s/touches the value inside the monad, but doesn't change or take out the value.

It just taps / peeks it

[simon.vergauwen]

Scala names are typically US based

Cats-effects: cancelable
Kotlin: cancellable

[julian]

Interesting... Thanks for indulging my musings 😄