from_base64to_base64from_base64 of from_base64 for ~[u8]from_base64 of from_base64 for strto_base64 of to_base64 for ~[u8]to_base64 of to_base64 for strfrom_base64from_base64fn from_base64() -> ~[u8]to_base64to_base64fn to_base64() -> strfrom_base64 of from_base64 for ~[u8]from_base64fn from_base64() -> ~[u8]from_base64 of from_base64 for strfrom_base64fn from_base64() -> ~[u8]to_base64 of to_base64 for ~[u8]to_base64fn to_base64() -> strto_base64 of to_base64 for strto_base64fn to_base64() -> str