COmmonHaskellHowTos

commonHowTosInHaskell.md

Enable multiline input in GHCI

use the command :set +m

Starting the yesod-web minimal template

use the command stack runghc Main.hs

running Stack repl in context of Yesod packages

use the command stack repl This will allow you to inspect the functions in the code and run them

building the executable

Use the stack build command

finding which files are hidden

fmap (fmap isHiddenFile ) $ FS.getDirectoryContents "/home/chetan"

getting non-hidden files

fmap (filter $ not. isHiddenFile ) $ FS.getDirectoryContents "/home/chetan"

enabling Overloaded Strings in GHCI - Haskell REPL

Use this command :set -XOverloadedStrings