extra-1.6.3: Extra functions I use.

Safe HaskellSafe
LanguageHaskell2010

System.Environment.Extra

Description

Extra functions for System.Environment. All these functions are available in later GHC versions, but this code works all the way back to GHC 7.2.

Synopsis

Documentation

module System.Environment

getExecutablePath :: IO FilePath #

Returns the absolute pathname of the current executable.

Note that for scripts and interactive sessions, this is the path to the interpreter (e.g. ghci.)

Since: 4.6.0.0

lookupEnv :: String -> IO (Maybe String) #

Return the value of the environment variable var, or Nothing if there is no such value.

For POSIX users, this is equivalent to getEnv.

Since: 4.6.0.0