fighting-insanity.md

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If your language works like this by default..

var x = {a: 5};
var y = {a: 5};
x === y; // => false

..you're fighting insanity..

var x = {a: 5};
var y = x;
y.b = 4;
x === y; // => true
x.b;     // => 4

..and don't let an unfamiliar syntax trick you..

(let [x {:a 5}
      y {:a 5}]
  (= x y)) ;; => true

..because simplicity isn't about syntax..

(let [x {:a 5}
      y (assoc x :b 4)]
  (= x y) ;; => false
  (:b x)) ;; => nil

..it's about minimizing the gap between your brain and the problem.