Subscripts are a hybrid of properties and functions, since they have a
parameter list, as well as getters and setters, so use of either symbol will be
unusual in this case.
However, I think a colon is more suitable, since it implies the possibility to
set the value.
In the future, if we add throwing getters/ setters:
subscript(_ position: Int) -> Element {
get {
return …
}
throwing set {
…
}
}
Should this require ‘throws -> Element’? Using a colon also removes this
potentially confusing case.
Thoughts?
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