Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell2010 |
Documentation
Produce a typed expression with the current value of an environment variable, or Nothing if it's not set.
Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell2010 |
Produce a typed expression with the current value of an environment variable, or Nothing if it's not set.