Two variables in for loop using Swift

Question

How to use two variables in for loop?

for j,k in zip(range(x,0,-1),range(y,-1,-1)

I want to implement this in Swift.

rshev · Accepted Answer · 2015-08-18 23:00:21Z

15

If your range is a python function, then the Swift-y solution will be:

    let x = 100
    let y = 99

    let rx = reverse(0...x)
    let ry = reverse(-1...y)

    for (j,k) in zip(rx, ry) {
        println(j, k)
    }

answered Aug 18, 2015 at 23:00

rshev

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Comments

Tulsi Leathers · Accepted Answer · 2015-08-18 22:55:44Z

4

if you're looping over a dictionary you can loop like this

for (key,value) in dictionary {
}

if an array etc. you're going to have to use a c style for loop just sub in whatever start and end indices you need

for var j = 0 , k = 0; j < 10 && k < 10; j++ , k++ {
}

EDIT

missed the zip in there. You can loop like this

for (j,k) in zip(range1, range2) {
}

answered Aug 18, 2015 at 22:55

Tulsi Leathers

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Didn't know about this syntax. But note: C-style for statement has been removed in Swift 3