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kotlinlang

guys, I’m a bit confused with kotlin’s Regex from std lib.
For example: I need to find all occurrences of numbers in str. And I don’t understand, why I can do that in two *very* similar ways?
```val str = "text here 123 and more text 456"
val regex = Regex("[0-9]+")```

way 1)
```var matchRes = regex.find(str)
while (matchRes != null) {
	println(matchRes.value)
	matchRes = matchRes.next()
}```

way 2)
```val matchRes = regex.findAll(str)
for (i in matchRes) {
	println(i.value)
}```

What’s the difference? May be `matchRes.next()` is not lazy, and `for (i in matchRes) {` is?