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DCD, the D Completion Daemon, is a cross platform auto-complete service for the D programming language written by Brian Schott.

It's used by several text editors and IDE to get IDE-grade features.

Technical details

The software is itself written in D. The service is based on the socket communication between a server and a client.



  • completion of identifiers (types, variables), version identifiers.
  • find symbol declaration.
  • retrieve the DDOC comment of a symbol.
  • retrieve the function parameters.


  • Basile B.'s fork implements a feature that allows to rename a symbol localy. A pre-build version of this fork is distributed with the IDE Coedit since version 2 update 5.

See also