
#10084: Data.List should have a takeLastN function -------------------------------------+------------------------------------- Reporter: leonbaum2 | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by nomeata): Heh, nice to see my blog cited here :-) One could argue that obviously, when you do `takeLastN` on a list, you are using the wrong data structure. But we also have `last` and `isSuffixOf` in `Data.List`, and maybe leaving it out for that reason is too much patronizing... In general, I’m in favor of adding that function. Did you have a real, practical need for the function, or are you bringing this up for other reasons? If you want this to become real, I suggest you follow the process in https://wiki.haskell.org/Library_submissions, i.e. send your proposal to the libraries mailing list. Possible issues to consider in the proposal and following discussion: * What is a good name for this? * If we have `takeLastN`, do we need `dropLastN`? How would that be implemented? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10084#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler