| Deadlock | |
| 1 (Data Constructor) | Z.IO.Exception |
| 2 (Type/Class) | Z.IO.Exception |
| debug | Z.IO.Logger |
| debugWith | Z.IO.Logger |
| defaultChunkSize | Z.IO.Buffered |
| defaultHints | Z.IO.Network.DNS, Z.IO.Network |
| defaultIPCClientConfig | Z.IO.Network.IPC, Z.IO.Network |
| defaultIPCServerConfig | Z.IO.Network.IPC, Z.IO.Network |
| defaultTCPClientConfig | Z.IO.Network.TCP, Z.IO.Network |
| defaultTCPServerConfig | Z.IO.Network.TCP, Z.IO.Network |
| defaultUDPConfig | Z.IO.Network.UDP, Z.IO.Network |
| defaultUDPRecvConfig | Z.IO.Network.UDP, Z.IO.Network |
| DEFAULT_MODE | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| Denormal | Z.IO.Exception |
| DirEntBlock | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntChar | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntDir | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntFIFO | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntFile | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntLink | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntSocket | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntType | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| DirEntUnknown | Z.IO.UV.FFI, Z.IO.FileSystem, Z.IO.FileSystem.Threaded |
| disconnectUDP | Z.IO.Network.UDP, Z.IO.Network |
| displayException | Z.IO.Exception |
| DivideByZero | Z.IO.Exception |