How to skip iterations of a for-in loop (Swift 3)

问题

Is it possible to skip iterations of a for-in loop in Swift 3?

I want to do something like this:

for index in 0..<100 {
    if someCondition(index) {
        index = index + 3 //Skip iterations here
    }
}

回答1:

Simple while loop will do

var index = 0

while (index < 100) {
    if someCondition(index) {
        index += 3 //Skip 3 iterations here
    } else {
        index += 1
        // anything here will not run if someCondition(index) is true
    }
}

回答2:

The easiest way is using continue within the if condition

       for index in 1...100
       {
            if index == 5
            {
               continue
            }
        print(index)//1 2 3 4 6 7 8 9 10
        }

Or

for index in 1...10 where index%2 == 0
{
  print(index)//2 4 6 8 10
}

来源：https://stackoverflow.com/questions/41009118/how-to-skip-iterations-of-a-for-in-loop-swift-3