Range types are unimplemented

[egroge]

The following is taken from the flint guide:

Range types unimplemented

Flint includes two range types, which are shortcuts for expressing ranges of values. These can only be used with for-in loops.

The half-open range (a..<b) defines a range that runs from a to b, but does not include b.

for let i: Int in (0..<5) {  
 // i will be 0, 1, 2, 3, 4 on separate iteratons}  

The open range operator (a...b) defines a range that runs from a to b and does include b.

for let i: Int in (0...5) {  
 // i will be 0, 1, 2, 3, 4, 5 on separate iteratons}  

At the moment, both a and b must be integer literals, not variables!

Planned feature > > In the future, it will be possible to iterate up to an arbitrary value. See flintlang/flint#397.