Control structures
If
https://kotlinlang.org/docs/reference/control-flow.html#if-expression
The classic if is revised, it is an expression :
When
https://kotlinlang.org/docs/reference/control-flow.html#when-expression
Kotlin doesn't have a switch keyword, it replaces it with a powerful when expression, similar to pattern matching :
For
https://kotlinlang.org/docs/reference/control-flow.html#for-loops
For loops are implemented as foreach loops, using in keyword :
Ranges
https://kotlinlang.org/docs/reference/ranges.html
Using rangeTo functions ranges can be defined for any comparable type.
The .. operator is used to define ranges, in and !in to check if a value is included in a range or to iterate over a range (for integral type).
downTo, step and until can be used to revert the range, change the progression step or exclude the last value.
