ianstarz

/* will return null::json on empty resultset */
SELECT array_to_json(array_agg(row_to_json(t))) FROM t; 

/*
  will return '[]' on empty resultset,
  null::json seems to be managed the same way than sql NULL by COALESCE()
*/
SELECT COALESCE(array_to_json(array_agg(row_to_json(t))), '[]') FROM t;

ianstarz

const logicGates = {
  nand (a, b) { return !(a && b); },
  not  (a)    { return this.nand (a, a); },
  and  (a, b) { return this.not  (this.nand (a, b)); },
  or   (a, b) { return this.nand (this.not  (a), this.not(b)); },
  nor  (a, b) { return this.not  (this.or   (a, b)); },
  xor  (a, b) { return this.and  (this.nand (a, b), this.or(a, b)); },
  xnor (a, b) { return this.not  (this.xor  (a, b)); }
};

ianstarz

var guid = function fn (n) {
  return n ?
           (n ^ Math.random() * 16 >> n/4).toString(16) :
           ('10000000-1000-4000-8000-100000000000'.replace(/[018]/g, fn));
};

ianstarz

[0, ['a', 'b', 'c'], 2, 'd', 4, 5, 'f', 7, ['g', 'h'], 9].reduce(function rec (prev, curr) {
    if (/array/i.test(curr.constructor)) {
      return curr.reduce(rec, prev);
    } else if (/string/i.test(curr.constructor)) {
      prev.push(curr);
    }

    return prev;
  }, []);

ianstarz

• Data Down / Actions Up

  • http://emberjs.jsbin.com/nayaho/edit?html,js - Interdependent select boxes. No observers.
  • http://ember-twiddle.com/2d7246875098d0dbb4a4 - One Way Input

• Plain JSBin's

  • http://rwjblue.jsbin.com/pixeki/edit?html,js,output

• Ember Version Base JSBin's

  • 1.0 - http://emberjs.jsbin.com/juluje/edit?html,js,output

• 1.1 - http://emberjs.jsbin.com/cofufo/edit?html,js,output