Detecting keypress

[jzr]

Names already existing in the containing scope are assigned into there. Python uses the nonlocal keyword for this behavior but doing it automatically is traditional in Lisp which Julia inherits from.

Detailed thread about this:

Referencing local variable before assignment results in unexpected behavior

Julia version: 1.6.0 I recently had a bug in my code, after isolating the bug, it came down to a piece of code that looks like this: function outer(n) function inner() n = n + 1 end inner() return n end println(outer(3)) 4 My impression was that outer(3) should return 3, but it actually returns 4. Somehow the code in the inner() block assigns value 4 to the variable n outside of its scope. To me this is very counter-intuitive. Is this a bug or intended beh…