many things are semigroupal: numbers, collections,...

# arrow

[pakoito]

many things are semigroupal: numbers, collections, strings, functions, even rx.Observable is semigroupal

[rcd27]

What about numbers: there is "zero" object there. 1 + 0 = 1(identity object)

[rcd27]

The same for [1,2,3] + [] ; "abc" + ""

[pakoito]

many semigroups are also monoids, yes 😄

[pakoito]

Observable.empty()

[pakoito]

the identity function

[Imran/Malic]

In fact semigroup is a superset of monoids: @rcd27 check this out https://blog.ploeh.dk/2017/11/27/semigroups/

[rcd27]

I'll check it out, thanks