Stdlib Sets docs error

[calindragomir]

Stdlib Sets docs error

[jisantuc]

Hi @calindragomir! As written, the statement is true --

@ val s = Set('a', 'b', 'c', 'd')
s: Set[Char] = Set('a', 'b', 'c', 'd')

@ s contains 'a'
res1: Boolean = true

@ s('a')
res2: Boolean = true

@ s('e')
res3: Boolean = false

@ s contains 'e'
res4: Boolean = false

The apply method on s (s with (someElem) after it) indeed tests the same thing that s contains someElem does. I think, looking through where these exercises are defined, that apply method on x being a synonym for x() hasn't been introduced before the Sets exercise -- is that correct?