ghci.md

GHCI

Interactive shell for the GHC compiler.

Commands

Command	Shortcut	Action
:reload	:r	Code reload
:type	:t	Type inspection
:kind	:k	Kind inspection
:info	:i	Information
:print	:p	Print the expression
:edit	:e	Load file in system editor
:load	:l	Set the active Main module in the REPL
:add	:ad	Load a file into the REPL namespace
:browse	:bro	Browse all available symbols in the REPL namespace

• View module-level bindings and types

:show bindings

• Examining module-level imports

:show imports

• See compiler level flags

:set

:showi language

• Change prompt

:set prompt "> "

• run main function with arguments from ghci

:main arg1 arg2

Language Extensions

	Function
+t	Show types of evaluated expressions
+s	Show timing and memory usage
+m	Enable multi-line expression delimited by :{ and :}

Resources

• WIWIKWLH