Monthly Downloads: 456
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Unclassified    

safe alternatives and similar packages

Based on the "Unclassified" category.
Alternatively, view safe alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of safe or a related project?

Add another 'Unclassified' Package


Safe Hackage version Stackage version Build status

A library wrapping Prelude/Data.List functions that can throw exceptions, such as head and !!. Each unsafe function has up to four variants, e.g. with tail:

  • tail :: [a] -> [a], raises an error on tail [].
  • tailMay :: [a] -> Maybe [a], turns errors into Nothing.
  • tailDef :: [a] -> [a] -> [a], takes a default to return on errors.
  • tailNote :: String -> [a] -> [a], takes an extra argument which supplements the error message.
  • tailSafe :: [a] -> [a], returns some sensible default if possible, [] in the case of tail.

This package is divided into three modules:

  • Safe contains safe variants of Prelude and Data.List functions.
  • Safe.Foldable contains safe variants of Foldable functions.
  • Safe.Exact creates crashing versions of functions like zip (errors if the lists are not equal) and take (errors if there are not enough elements), then wraps them to provide safe variants.