gistfile1.txt

> var o = [1,2,3]
undefined
> var hubbed = r.hub(o)
undefined
> var xs = r.map(hubbed, function (x) { console.log("x", x })
... 
> var xs = r.map(hubbed, function (x) { console.log("x", x) })
undefined
> var ys = r.map(hubbed, function (y) { console.log("y", y) })
undefined
> fold(merge([xs, ys]), function () {})
ReferenceError: merge is not defined
    at repl:1:7
    at REPLServer.self.eval (repl.js:109:21)
    at Interface.<anonymous> (repl.js:248:12)
    at Interface.EventEmitter.emit (events.js:96:17)
    at Interface._onLine (readline.js:200:10)
    at Interface._line (readline.js:518:8)
    at Interface._ttyWrite (readline.js:736:14)
    at ReadStream.onkeypress (readline.js:97:10)
    at ReadStream.EventEmitter.emit (events.js:126:20)
    at emitKey (readline.js:1058:12)
> r.fold(r.merge([xs, ys]), function () {})
x 1
x 2
x 3
y 1
y 2
y 3
undefined
>