Index - U
| Unauthorized | Yam.Internal, Yam |
| unBasicAuthCheck | Yam.Internal, Yam |
| unChanLoggingT | Yam.Internal, Yam |
| UndecodableHeader | Yam.Internal, Yam |
| unTagged | Yam.Internal, Yam |
| UntaggedValue | Yam.Internal, Yam |
| unwrapUnaryRecords | Yam.Internal, Yam |
| unWriterLoggingT | Yam.Internal, Yam |
| URI | |
| 1 (Data Constructor) | Yam.Internal, Yam |
| 2 (Type/Class) | Yam.Internal, Yam |
| uriAuthority | Yam.Internal, Yam |
| uriFragment | Yam.Internal, Yam |
| uriPath | Yam.Internal, Yam |
| uriQuery | Yam.Internal, Yam |
| uriScheme | Yam.Internal, Yam |