Ref Type: Atom


An atom is a reference type which is shared, synchronous, and autonomous:

  • shared - multiple threads can share access

  • synchronous - requested changes occur immediately

  • autonomous - changes are made to a single item

Example: Set foo to 42, right now.

Clojure API

Note: "CC" links to the official Clojure documentation; "CD" links to ClojureDocs.

  • atom (CC, CD) - creates and returns an Atom

  • compare-and-set! (CC, CD) - (maybe) set the value of Atom

  • deref (CC, CD) - returns the current state of an Atom

  • swap! (CC, CD) - swaps f(atom) into the Atom

To be continued...

This wiki page is maintained by Rich Morin, an independent consultant specializing in software design, development, and documentation. Please feel free to email comments, inquiries, suggestions, etc!

Topic revision: r6 - 21 Aug 2015, RichMorin
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