Nim does this, and the whitespace is significant[0][1]: echo $foo # is parsed as echo($foo) [..] echo(1, 2) # pass 1 and 2 to echo echo (

Nim does this, and the whitespace is significant[0][1]: echo $foo # is parsed as echo($foo) [..] echo(1, 2) # pass 1 and 2 to echo echo (1, 2) # pass the tuple (1, 2) to echo [..] proc optarg(x: int, y: int = 0): int = x + y proc singlearg(x: int): int = 20*x echo optarg 1, " ", singlearg 2 # prints "1 40" let fail = optarg 1, optarg 8 # Wrong. Too many arguments for a command call let x = optarg(1, optarg 8) # traditional procedure call with 2 arguments let y = 1.optarg optarg 8 # same thing as above, w/o the parenthesis assert x == y [0]: https://nim-lang.org/docs/manual.html#syntax-precedence https://nim-lang.org/docs/manual.html#syntax-precedence [1]: https://nim-lang.org/docs/manual.html#procedures-command-invocation-syntax https://nim-lang.org/docs/manual.html#procedures-command-inv...