I have an array:
let individualScores = [75, 43, 103, 87, 12]
And I iterate like this:
for score in individualScores {
}
However, is there a way to declare the object type explicitly? I think it would come in handy later w/ custom objects, or other reasons. Something like:
for Integer score in individualScores {
}
When you type a variable, you do:
var score: Int
And you do the same in a loop:
for score: Int in individualScores {
}
It seems to be pretty consistent in that regard.
Int) work but anything more complex segfaults the compiler in Xcode 7.0yes its possible
let individualScores:Int[] = [75, 43, 103, 87, 12]
for score:Int in individualScores {
}
let possibleTipsExplicit:[Double] = [0.15, 0.18, 0.20] but your example fixed my error when I used let possibleTipsExplicit:Double[] = [0.15, 0.18, 0.20]. Even the example on Apple's own site is the incorrect version.Yes. You can explicitly specify the type if you wish.
let individualScores = [75, 43, 103, 87, 12]
for score: Int in individualScores {
println(score)
}
Explicit type declarations follow an identifier declaration with a colon.
for score: Int in individualScores {
// ...
}
let π: Double = 3.1415926535897932
var x: Int = 10
You can read it "x is an Int". See A Swift Tour.
The loop variable (score) is explicitly and strongly typed whether you declare the type or not — it comes from the type of the array you're iterating through. Swift knows individualScores is an Int[], short for an Array<Int> because you declared it with integer literals. See Generics for more about how that works.
