Cannot enter multiline statements in GHCi
ghci, haskell, haskell-platform
Solution
The documentation says:
GHCi also has a multiline mode, enabled by :set +m, in which GHCi detects automatically when the current statement is unfinished and allows further lines to be added. A multi-line input is terminated with an empty line.
The multiline mode makes GHCi behave much like e.g. the Python interpreter:
Prelude> :set +m
Prelude> let x = 1
Prelude| y = 2
Prelude| z = 3
Prelude|
Prelude> (x, y, z)
(1,2,3)
This hidden gem is wonderful for playing with readable code!
If you want this to be the default behaviour, you can create a `.ghci` file in your home directory with a line saying `:set +m`. (Now that this came up, I actually did so.)
Problem
``` let x=1 y=2 z=3 ``` does not work in GHCi, forcing me to use `let {x=1;y=2;y=3}` instead. How can I fix this problem?