core :: CString :: is_base64
self
assert "Qn03".is_base64 assert not "#sd=".is_base64
# Is `self` a well-formed Base64 entity ? # # ~~~nit # assert "Qn03".is_base64 # assert not "#sd=".is_base64 # ~~~ fun is_base64(length: Int): Bool do return check_base64(length) == null