Swift For Loop
Swift For Loop
Use for-in to iterate over ranges, arrays, dictionaries, and other sequences.
Iterate a Range
Use a range to loop a fixed number of times.
This example iterates from 1 to 3 inclusive.
Iterate an Array
Loop through an array with for-in or enumerated() to access index and value.
Example
let nums = [10, 20, 30]
for n in nums {
print(n)
}
for (index, value) in nums.enumerated() {
print("index: \(index), value: \(value)")
}Use enumerated() to get index and value together.
Tip: Prefer for-in over manual index loops when you do not need the index.
