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discard """
output: '''@[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 20, 21, 24, 27, 30, 36, 40, 42]
1002'''
"""
import strutils
proc slice[T](iter: iterator(): T {.closure.}, sl: auto): seq[T] =
var res: seq[int64] = @[]
var i = 0
for n in iter():
if i > sl.b:
break
if i >= sl.a:
res.add(n)
inc i
res
iterator harshad(): int64 {.closure.} =
for n in 1 .. < int64.high:
var sum = 0
for ch in string($n):
sum += parseInt("" & ch)
if n mod sum == 0:
yield n
echo harshad.slice 0 .. <20
for n in harshad():
if n > 1000:
echo n
break
# bug #3499 last snippet fixed
# bug 705 last snippet fixed
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