zheplusplus

function cartesianProduct(sets) {
    return sets.reduce(function(items, nextSequence) {
        return nextSequence.map(function(element) {
            return items.map(function(item) {
                var copyItem = item.slice(0);
                copyItem.push(element);
                return copyItem;
            });
        }).reduce(function(sum, current) {
            return sum.concat(current);

zheplusplus

var tknz = typeof require === 'undefined' ? window.tokenizer
                                          : require('./tokenizer');
var t = tknz.Tokenizer();
t
 .simpleSymbols('=+-*/%<>!.', 'operator')
 .simpleSymbols('(', 'op_paren')
 .simpleSymbols(')', 'cl_paren')
 .simpleSymbols('{', 'op_brace')
 .simpleSymbols('}', 'cl_brace')
 .simpleSymbols(';', 'semicolon')

zheplusplus

/* inline codes are within two ` */
'a``b``c``d`e``f'.split(/``((?:[^`]|`[^`])*)``/)
/* ["a", "b", "c", "d`e", "f"] */