File: titerconcat.nim

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file content (24 lines) | stat: -rw-r--r-- 320 bytes parent folder | download | duplicates (6)
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discard """
  output: '''1
2
3
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20
21
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23'''
"""

proc toIter*[T](s: Slice[T]): iterator: T =
  iterator it: T {.closure.} =
    for x in s.a..s.b:
      yield x
  return it

iterator concat*[T](its: varargs[T, toIter]): auto =
  for i in its:
    for x in i():
      yield x

for i in concat(1..4, 20..23):
  echo i