located-base

Location-aware variants of partial functions

This library provides variants of standard partial functions that include their call-site in the error message when they crash. For example: @ ghci> 'Data.List.Located.head' [] *** Exception: Prelude.head: empty list Callstack: \ \ error, called at src\/Data\/List\/Located.hs:19:14 in locat_KhGZ7Rz1bn9DKFeFxhawNB:Data.List.Located \ \ head, called at \<interactive\>:6:1 in interactive:Ghci1 @

homepage ↗