Example
Function application syntax in Elm does not use parenthesis or commas, and is instead whitespace-sensitive.
To define a function, specify its name multiplyByTwo and arguments x, any operations after equal sign = is what returned from a function.
multiplyByTwo x =
x * 2
To call a function, specify its name and arguments:
multiplyByTwo 2 -- 4
Note that syntax like multiplyByTwo(2) is not necessary (even though the compiler doesn't complain). The parentheses only serve to resolve precedence:
> multiplyByTwo multiplyByTwo 2
-- error, thinks it's getting two arguments, but it only needs one
> multiplyByTwo (multiplyByTwo 2)
4 : number
> multiplyByTwo 2 + 2
6 : number
-- same as (multiplyByTwo 2) + 2
> multiplyByTwo (2 + 2)
8 : number
