4 ms·

> Leading . now closes all open calls, allowing for simpler chaining syntax. I feel like this is an important improvement, but I don't really understand what i

• xixixao 13y ago
  result = range 1, 3 .concat range 4, 6 .map (x) -> x * x .filter (x) -> x % 2 is 0 For example, the leading `.map` closes the open call to `range` and the open call to `concat`. Before 1.7.0, `.map` would be called on the number 6.
• bobbyi_settv 13y ago
  It would have been nice if their code example for this feature showed how the code would have looked in the prior version of Coffeescript.
  • ndnichols 13y ago
    It would look like result = range(1, 3).concat(range 4, 6).map((x) -> x * x).filter (x) -> x % 2 is 0 or result = range 1, 3 result = result.concat range 4, 6 result = result.map (x) -> x * x result = result.filter (x) -> x % 2 is 0
  • xixixao 13y ago
    $('body') .click (e) -> $('.box') .fadeIn('fast') .addClass '.active' .css 'background', 'white' If I omit as many parentheses as possible. Also for the other example: result = range(1, 3) .concat(range 4, 6) .map((x) -> x * x) .filter (x) -> x % 2 is 0
• rayshan 13y ago
  Instead of this: $ 'body' .click (e) -> $ '.box' .fadeIn 'fast' .addClass '.active' .css 'marginRight', '10px' You used to have to do this: $('body') .click (e) -> $('.box') .fadeIn('fast') .addClass('.active') .css 'marginRight', '10px' Note the extra ( )s, if not used, the next method call is not recognized as a method call but rather part of the previous call's argument. The last method call did not and does not need to be closed with ( ). This is hugely important for libraries like d3 with super long call chains.