• Here's a example:

    >(_=>print(x - --1))()
    Uncaught Error: Unable to assign value to non-reference Number
     at line 1 col 10
    print(x---1)
    

    My code is indeed incorrect for the reason given, but the source snippet (if reparsed) is about x-- - 1, which is probably what I thought I had typed(!).

About

Avatar for user135362 @user135362 started