:: String -> Int is:exact -package:gpolyline -package:numeric-prelude -package:ghc-lib-parser -package:vty -package:speculate -package:ViennaRNAParser -package:simple-cmd -package:hegg -package:base package:foundation

error :: forall (r :: RuntimeRep) (a :: TYPE r) . HasCallStack => String -> a
foundation Foundation
stop execution and displays an error message