A more user-friendly function enhancing the `push!(S::Set, element)` method?

[WalterMadelim]

Currently the push! function returns the updated S

julia> S = Set();

julia> push!(S, 1)
Set{Any} with 1 element:
  1

The returned object is uninformative to a user, since when I need S I can call it out directly

julia> S
Set{Any} with 1 element:
  1

Therefore I think devising a new function achieving the following is more meaningful in practice (I guess the implementation can be optimized, thereby opening this issue)

collect!(S, e) = e in S ? false : (push!(S, e); true)

A detailed discussion is at https://discourse.julialang.org/t/receive-the-success-status-of-push-set-element/130988?u=waltermadelim

[jakobnissen]

You are looking for the existing in! function. The semantics of push! cannot be changed at this time, as that would be breaking. Furthermore, having mutating functions return the mutated sequence is explicitly part of Julia's style and is often convenient.

Closing this as wontfix.