3 ms·

That's because you didn't spend two hours the other night tracking down a bug caused by upgrading to the latest coffeescript in which they removed shadowing on

• debacle 14y ago
  I'm not sure what you mean by 'removed shadowing on loop variables,' but in general there's a reason that lexical scope exists - so variables can be reused. Why prevent variables from being reused?
  • __david__ 14y ago
    In coffeescript 1.3.1 this code: a = 3 b = -> for a in [6,7,8] c = a b() console.log(a) would print "3". In coffeescript 1.3.3 it prints "8". The solution is either to rename one of the 'a' variables or add `var a` in the b() function. Coming from C where I always (ok 99% of the time) do: for (int i=0; ...) the loop scoping rules in the 1.3.1 version of coffeescript felt natural. The 1.3.3 change feels stupid.