Check out example codes for "swift for loop". It will help you in understanding the concepts better.

Code Example 1

```
for i in 0...10 {
print(i)
}
let array = Array(0...10) //same as [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for value in array {
print(value)
}
```

Code Example 2

```
for n in 1...5 {
print(n)
}
// Output: 1 2 3 4 5
```

Code Example 3

```
for n in 1...5 {
print(n)
}
```

Code Example 4

```
var x = 0;
while x < 10 {
print "\(x)" //prints x until x < 10 evaluates to false
x = x + 1
}
```

Learn ReactJs, React Native from akashmittal.com