#8712: Data.Ix missing info on row/column major indexing -------------------------------------+------------------------------------- Reporter: mirpa | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.6.3 Keywords: row, column, | Operating System: Unknown/Multiple major, Ix | Type of failure: Documentation Architecture: Unknown/Multiple | bug Difficulty: Easy (less than 1 | Test Case: hour) | Blocking: Blocked By: | Related Tickets: | -------------------------------------+------------------------------------- I've tried to use {{{Data.Ix}}} with {{{Data.Vector}}} for image manipulations and I confused column with row-major indexing. I expected than {{{Data.Ix.index ((0,0),(3,3)) (1,0) == 1}}} while it is actually equal to 4. Documentation for {{{Data.Ix}}} should explicitly state that it is row- major indexing and function {{{Data.Ix.index}}} might be accompanied by example like: {{{index ((0,0),(3,3)) (1,0) == 4}}} which should be obvious. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8712 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler