result = range 1, 3 .concat range 4, 6 .map (x) -> x * x .filter (x) -> x % 2 is 0 For example, the leading `.map` closes the open call to `range`

result = range 1, 3 .concat range 4, 6 .map (x) -> x * x .filter (x) -> x % 2 is 0 For example, the leading `.map` closes the open call to `range` and the open call to `concat`. Before 1.7.0, `.map` would be called on the number 6.