iliakarasin

// Center
@mixin center($direction, $position:'absolute') {
	@if $direction == x {
		left: 50%;
		position: if($position == relative, relative, absolute);
		-webkit-transform: translateX(-50%);
		-ms-transform: translateX(-50%);
		transform: translateX(-50%);
	} @else if $direction == y {
		position: if($position == relative, relative, absolute);

eculver

$ tmux attach
protocol version mismatch (client 7, server 6)

$ pgrep tmux
3429
$ /proc/3429/exe attach

katowulf

// assumes you add a timestamp field to each record (see Firebase.ServerValue.TIMESTAMP)
// pros: fast and done server-side (less bandwidth, faster response), simple
// cons: a few bytes on each record for the timestamp
var ref = new Firebase(...);
ref.orderByChild('timestamp').startAt(Date.now()).on('child_added', function(snapshot) {
  console.log('new record', snap.key());
});