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narimiran/chain.nim Secret

Created March 22, 2018 18:12
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chain.nim
proc chain[T](xs: varargs[seq[T]]): iterator: T =
iterator inner: T =
for x in xs.items:
for i in 0 ..< x.len:
yield x[i]
inner
let ch1 = chain(@[1, 2, 3, 4], @[5, 4, 3])
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