Reference counting and tracing are two alternative approaches to [garbage collection].

** Languages examples **

*** Languages that use reference counting ***

   * [Perl]
   * [Python] (with cycle detection)
   * [Tcl]

*** Languages that use a tracing GC ***

   * [Java]
   * [Jim Tcl]

** See also **

   * [http://lambda-the-ultimate.org/node/4155%|%Lambda the Ultimate discussion]

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