a: [(x => x), (x => x * x)] print a.length is 2 regex: /match/i words: "I think there is a match in here." print !!words.match(regex) neg: (3 -4) print neg is -1 func: => return if true print func() is null str: "\\" reg: /\\/ print reg(str) and str is '\\' i: 10 while i -= 1 print i is 0 money$: 'dollars' print money$ is 'dollars'