core.async

A Clojure library providing facilities for async programming and communication.

Releases and Dependency Information

Latest release: 0.5.527

• All Released Versions

deps.edn dependency information:

  org.clojure/core.async {:mvn/version "0.5.527"}

Leiningen dependency information:

 [org.clojure/core.async "0.5.527"]

Maven dependency information:

<dependency>
  <groupId>org.clojure</groupId>
  <artifactId>core.async</artifactId>
  <version>0.5.527</version>
</dependency>

Documentation

• Rationale
• API docs
• Code walkthrough

Presentations

• Rich Hickey on core.async
• Tim Baldridge on core.async from Clojure/conj 2013 (code).
• Tim Baldridge on go macro internals - part 1 part 2

Contributing

Contributing to Clojure projects requires a signed Contributor Agreement. Pull requests and GitHub issues are not accepted; please use the core.async JIRA project to report problems or enhancements.

To run the ClojureScript tests:

• lein cljsbuild once
• open script/runtests.html
• View JavaScript console for test results

License

Copyright © 2017-2019 Rich Hickey and contributors

Distributed under the Eclipse Public License, the same as Clojure.

Changelog

• Release 0.5.527 on 2019.11.12
  • Add system property clojure.core.async.go-checking that will throw if core.async blocking ops (>!!, <!!, alts!!, alt!!) are used in a go block
  • Fix use of blocking op and thread constraints in pipeline - will now match pipeline-blocking in using N cached threads.
• Release 0.4.500 on 2019.06.11
  • ASYNC-227 cljs alts! isn't non-deterministic
  • ASYNC-224 Fix bad putter unwrapping in channel abort
  • ASYNC-226 Fix bad cljs test code
• Release 0.4.490 on 2018.11.19
  • ASYNC-216 Delay start of timeout thread
  • ASYNC-218 Fix docstring for put!
  • ASYNC-213 Small addition to promise-chan docstring
• Release 0.4.474 on 2018.01.08
  • Fix typo in error message
  • Remove Java code, depend on Java 1.7+
  • Add deps.edn, can now be used as a git dependency
• Release 0.3.465 on 2017.11.17
  • ASYNC-119 Move macros to cljs.core.async ns (CLJS)
  • ASYNC-201 Out-of-bounds index values passed in timers (CLJS)
• Release 0.3.443 on 2017.05.26
  • ASYNC-159 - promise-chan in ClojureScript is broken
• Release 0.3.442 on 2017.03.14
  • Fix bad :refer-clojure clause that violates new spec in Clojure 1.9.0-alpha15
• Release 0.3.441 on 2017.02.23
  • ASYNC-187 - Tag metadata is lost in local closed over by a loop
    • Related: ASYNC-188
  • ASYNC-185 - thread prevents clearing of body locals
  • ASYNC-186 - NPE when go closes over a local variable bound to nil
• Release 0.3.426 on 2017.02.22
  • ASYNC-169 - handling of catch and finally inside go blocks was broken, causing a number of issues. Related: ASYNC-100, ASYNC-173, ASYNC-180, ASYNC-179, ASYNC-122, ASYNC-78, ASYNC-168
  • ASYNC-138 - go blocks do not allow closed over locals to be cleared which can lead to a memory leak. Related: ASYNC-32
  • ASYNC-155 - preserve loop binding metadata when inside a go block
  • ASYNC-54 - fix bad type hint on MAX-QUEUE-SIZE
  • ASYNC-177 - fix typo in Buffer protocol full? method
  • ASYNC-70 - docstring change in thread, thread-call
  • ASYNC-143 - assert that fixed buffers must have size > 0
  • Update tools.analyzer.jvm dependency
• Release 0.2.395 on 2016.10.12
  • Add async version of transduce
• Release 0.2.391 on 2016.09.09
  • Fix redefinition warning for bounded-count (added in Clojure 1.9)
  • Add :deprecated meta to the deprecated functions
• Release 0.2.385 on 2016.06.17
  • Updated tools.analyzer.jvm version
• Release 0.2.382 on 2016.06.13
  • Important: Change default dispatch thread pool size to 8.
  • Add Java system property clojure.core.async.pool-size to set the dispatch thread pool size
  • ASYNC-152 - disable t.a.jvm's warn-on-reflection pass
• Release 0.2.374 on 2015.11.11
  • ASYNC-149 - fix error compiling recur inside case in a go block
  • Updated tools.analyzer.jvm version (and other upstream deps)
  • Updated to latest clojurescript and cljsbuild versions
• Release 0.2.371 on 2015.10.28
  • ASYNC-124 - dispatch multiple pending takers from expanding transducer
  • ASYNC-103 - NEW promise-chan
  • ASYNC-104 - NEW non-blocking offer!, poll!
  • ASYNC-101 - async/reduce now respects reduced
  • ASYNC-112 - replace "transformer" with "transducer" in deprecation messages
  • ASYNC-6 - alts! docs updated to explicitly state ports is a vector
  • Support (try (catch :default)) in CLJS exception handling
  • Use cljs.test
  • Updated tools.analyzer.jvm version (and other upstream deps)
• Release 0.1.346.0-17112a-alpha on 2014.09.22
  • cljs nextTick relies on goog.async.nextTick
  • Updated docstring for put! re result on closed channel
• Release 0.1.338.0-5c5012-alpha on 2014.08.19
  • Add cljs transducers support
• Release 0.1.319.0-6b1aca-alpha on 2014.08.06
  • Add transducers support
  • NEW pipeline
• Release 0.1.303.0-886421-alpha on 2014.05.08
• Release 0.1.301.0-deb34a-alpha on 2014.04.29
• Release 0.1.298.0-2a82a1-alpha on 2014.04.25
• Release 0.1.278.0-76b25b-alpha on 2014.02.07
• Release 0.1.267.0-0d7780-alpha on 2013.12.11
• Release 0.1.262.0-151b23-alpha on 2013.12.10
• Release 0.1.256.0-1bf8cf-alpha on 2013.11.07
• Release 0.1.242.0-44b1e3-alpha on 2013.09.27
• Release 0.1.222.0-83d0c2-alpha on 2013.09.12