safe
Library of safe (exception free) functions https://github.com/ndmitchell/safe#readme
| Version on this page: | 0.3.17 |
| LTS Haskell 13.8: | 0.3.17 |
| Stackage Nightly 2019-02-19: | 0.3.17 |
| Latest on Hackage: | 0.3.17 |
Module documentation for 0.3.17
Safe 
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 oftail.
This package is divided into three modules:
Safecontains safe variants ofPreludeandData.Listfunctions.Safe.Foldablecontains safe variants ofFoldablefunctions.Safe.Exactcreates crashing versions of functions likezip(errors if the lists are not equal) andtake(errors if there are not enough elements), then wraps them to provide safe variants.
Changes
Depends on 1 package:
Used by 310 packages:
acid-state-dist, agentx, amby, animate-frames, animate-preview, antigate, api-tools, arena, arion, authoring, avers, aws, aws-elastic-transcoder, aws-sdk, aws-sdk-text-converter, aws-sign4, bake, birch-beer, black-jewel, blacktip, blaze-html-contrib, BlogLiterately-diagrams, brittany, buchhaltung, byteunits, cblrepo, cgen, cgrep, chorale, citation-resolve, clac, clanki, cmaes, Coadjute, codecov-haskell, concorde, conduit-parse, configifier, convert-annotation, crdt, and many more
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