zachad

// The polling function
function poll(fn, timeout, interval) {
    var endTime = Number(new Date()) + (timeout || 2000);
    interval = interval || 100;

    var checkCondition = function(resolve, reject) { 
        var ajax = fn();
        // dive into the ajax promise
        ajax.then( function(response){
            // If the condition is met, we're done!

zachad

# big_array has over 120,000 strings in it

def select_search(q)
  big_array.select do |s|
     s =~ /^#{Regexp.esecap(q)}/
  end
end

def grep_search(q)
  big_array.grep( /^#{Regexp.escape(q)}/ )