Commits on Aug 28, 2024

1. Add fast-lanes for '++'/2 and '--'/2 on nil arguments …

   Currently appending an empty list to another list causes the left-hand
   side list to be fully copied. We can skip the append operation when the
   right-hand side is nil since it shouldn't change the left-hand side
   list. In this fast-lane we scan the list to determine if it is improper
   so that cases like `[1, 2 | 3] ++ []` behave the same as cases like
   `[1, 2 | 3] ++ [4]`: return a badarg error.
   
   This patch adds similar fast-lanes for '--'/2: we can return the first
   argument when either the first or second arguments are nil.

   

   the-mikedavis committed Aug 28, 2024
   Configuration menu

   • View commit details
   • Copy full SHA for 8eeb95d
   • Browse repository at this point

   Copy the full SHA

   8eeb95d View commit details

   Browse the repository at this point in the history