File: t8558.nim

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file content (26 lines) | stat: -rw-r--r-- 234 bytes parent folder | download | duplicates (3) 
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discard """
  output: '''10
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1
go!
'''
"""

type Integral = concept x
  x == 0 is bool
  x - 1 is type(x)

proc countToZero(n: Integral) =
  if n == 0: echo "go!"
  else:
    echo n
    countToZero(n-1)

countToZero(10)