In such way, you can replace the - with =>, which looks like scala. You can convert a range (or any Iterable) to a List with toList (): (1.5).

If you're happy, you can rename the minus function to compareTo and return 0. 3 Answers Sorted by: 13 That syntax creates a list of ranges ( List) with a single range in it.

You can put the whole expression in the second part, which is OK but seems like unnecessary duplication. I tried to find an unbounded range comparison, but couldn't make this work either? Is it possible to write this as an unbounded range? // trying to get an unbounded range - doesn't compile

In other words, a range is an interval from the start value to the end value. Both the start and end values belong to the range too. That is, a range of 1 as the start value and 5 as the end value. A simple example would be, the values between 1 and 5 form a range. forEach as you can see at is special-cased for arrays, but has a single implementations for all Iterable s, so it needs to create an iterator. In Kotlin, for loop is used to iterate through the following because all of them provides iterator. I'm trying to use the WHEN clause with a > or = >) in a comparison to enable this? val foo = 2 A range is a collection of values determined by a start and stop value. A for loop over a range or an array is compiled to an index-based loop that does not create an iterator object.

For range kotlin