Yes, still learning Swift, and no, am not lazy, but I do have some sort of reading problem.
In code block below, what do the < and > represent?
let requestedComponents: Set<Calendar.Component> = [
.year,
.month,
.day,
.hour,
.minute,
.second
]
You should read Set<X> as "Set of X".
I.e. Set<X> is a Set where every element must be of type X.
(This syntax is shared with C++, Java and probably other languages where it goes by various different names.)
For an array, you define the type of components with
let myArray: [Int] = [1, 2, 3]
for sets, syntax is a bit different, it uses <> instead of [] for type declaration (don't know why).
So that means:
requestedComponents is a set which elements are of type Calendar.Component.
What is confusing is that the set is later built using []…
For an array, it would have been:
let request : [Calendar.Component] = [
.year,
.month,
.day,
.hour,
.minute,
.second
]
But the API you use requests a Set.
Reference: https://docs.swift.org/swift-book/LanguageGuide/CollectionTypes.html
So take make sure I read it correctly,
Sets and Array are the same except a Set has no ordering, and each value must be unique?
And in the example I gave, Calendar.Component was already defined as a set?
You should read Set<X> as "Set of X".
I.e. Set<X> is a Set where every element must be of type X.
(This syntax is shared with C++, Java and probably other languages where it goes by various different names.)
