Nim/examples/allany.nim

# All and any

template all(container, cond: untyped): bool =
  var result = true
  for it in items(container):
    if not cond(it):
      result = false
      break
  result

template any(container, cond: untyped): bool =
  var result = false
  for it in items(container):
    if cond(it):
      result = true
      break
  result

if all("mystring", {'a'..'z'}.contains) and any("myohmy", 'y'.`==`):
  echo "works"
else:
  echo "does not work"