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alandipert/gist:347085

Created March 28, 2010 22:31
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Imap.prototype.next: ((id, fmt) ->
prefix: (for i in [0...fmt.replace(/0/g, "").length]
(-> this.charAt(Math.random()*this.length))
.call("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
).join("")
fmt: fmt.replace(/X/g, "")
return ( ->
id: ++id % (parseInt(fmt.replace(/0/g, "9")) + 1)
ret: fmt + id
prefix + ret.substring(ret.length - fmt.length)
)
)(0, "XXXX0000")
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