This is a great release, thanks! CLJ-1529 seems to have solved a major compilation-time issue with core.matrix
CLJ-1578 is a good start in that it stops some of the failures, but the warnings still aren't addressed... I will open a new ticket On Saturday, 15 November 2014 03:34:55 UTC+8, Alex Miller wrote: > > Clojure 1.7.0-alpha4 is now available. > > Try it via > - Download: > http://central.maven.org/maven2/org/clojure/clojure/1.7.0-alpha4/ > - Download securely: > https://repo1.maven.org/maven2/org/clojure/clojure/1.7.0-alpha4/ > - Leiningen: [org.clojure/clojure "1.7.0-alpha4"] > > A few important changes to be aware of: > > 1) CLJ-1330 (added in 1.7.0-alpha3) contained an enhancement to include > local names in class names. This introduced some problems due to class > name lengths. That aspect of CLJ-1330 has been retracted and this should > no longer be an issue. > > 2) CLJ-1578 highlighted an issue where new Clojure core functions > ("update" in this case) could cause errors to be thrown on reload with > existing code bases that used that function name. This will now emit a > warning instead of throwing an exception. This should make it safer to > upgrade to new Clojure versions without incurring errors. > > 3) CLJ-1529 avoids unnecessary calls to Class.forName() and can > significantly reduce compile time on some (not all) projects. > > For all changes new in alpha4, see the issues marked "(alpha4)" in the > full changes below. > > ------------------------------------------------------------ > Clojure 1.7.0-alpha4 has the changes below from 1.6.0: > > ## 1 New and Improved Features > > ### 1.1 Transducers > > Transducers is a new way to decouple algorithmic transformations from their > application in different contexts. Transducers are functions that transform > reducing functions to build up a "recipe" for transformation. > > Also see: http://clojure.org/transducers > > Many existing sequence functions now have a new arity (one fewer argument > than before). This arity will return a transducer that represents the same > logic but is independent of lazy sequence processing. Functions included > are: > > * conj (conjs to []) > * map > * mapcat > * filter > * remove > * take > * take-while > * drop > * drop-while > * cycle > * take-nth > * replace > * partition-by > * partition-all > * keep > * keep-indexed > > Additionally some new transducer functions have been added: > > * cat - concatenates the contents of each input > * de-dupe - removes consecutive duplicated values > * random-sample - returns items from coll with random probability > > And this function can be used to make completing transforms: > > * completing > > There are also several new or modified functions that can be used to apply > transducers in different ways: > > * sequence - takes a transformation and a coll and produces a lazy seq > * transduce - reduce with a transformation (eager) > * eduction - returns a reducible/seqable/iterable seq of applications of > the transducer to items in coll. Applications are re-performed with every > reduce/seq/iterator. > * run! - run the transformation for side effects on the collection > > There have been a number of internal changes to support transducers: > > * volatiles - there are a new set of functions (volatile!, vswap!, > vreset!, volatile?) to create and use volatile "boxes" to hold state in > stateful transducers. Volatiles are faster than atoms but give up atomicity > guarantees so should only be used with thread isolation. > * array iterators - added support for iterators over arrays > > Some related issues addressed during development: > * [CLJ-1511](http://dev.clojure.org/jira/browse/CLJ-1511) > * [CLJ-1497](http://dev.clojure.org/jira/browse/CLJ-1497) > * [CLJ-1549](http://dev.clojure.org/jira/browse/CLJ-1549) > * [CLJ-1537](http://dev.clojure.org/jira/browse/CLJ-1537) > * [CLJ-1554](http://dev.clojure.org/jira/browse/CLJ-1554) (alpha4) > > > ### 1.2 Keyword and Symbol Construction > > In response to issues raised in [CLJ-1439]( > http://dev.clojure.org/jira/browse/CLJ-1439), > several changes have been made in symbol and keyword construction: > > 1) The main bottleneck in construction of symbols (which also occurs > inside keywords) was > interning of the name and namespace strings. This interning has been > removed, resulting > in a performance increase. > > 2) Keywords are cached and keyword construction includes a cache check. A > change was made > to only clear the cache reference queue when there is a cache miss. > > ### 1.3 Warn on Boxed Math > > One source of performance issues is the (unintended) use of arithmetic > operations on > boxed numbers. To make detecting the presence of boxed math easier, a > warning will now > be emitted about boxed math if \*unchecked-math* is set to :warn-on-boxed > (any truthy > value will enable unchecked-math, only this specific value enables the > warning). > > Example use: > > user> (defn plus-2 [x] (+ x 2)) ;; no warning, but boxed > #'user/plus-2 > user> (set! *unchecked-math* :warn-on-boxed) > true > user> (defn plus-2 [x] (+ x 2)) ;; now we see a warning > Boxed math warning, NO_SOURCE_PATH:10:18 - call: public static > java.lang.Number > clojure.lang.Numbers.unchecked_add(java.lang.Object,long). > #'user/plus-2 > user> (defn plus-2 [^long x] (+ x 2)) ;; use a hint to avoid boxing > #'user/plus-2 > > * [CLJ-1325](http://dev.clojure.org/jira/browse/CLJ-1325) > * [CLJ-1535](http://dev.clojure.org/jira/browse/CLJ-1535) > > ### 1.4 update - like update-in for first level > > `update` is a new function that is like update-in specifically for > first-level keys: > > (update m k f args...) > > Example use: > > user> (update {:a 1} :a inc) > {:a 2} > user> (update {:a 1} :a + 2) > {:a 3} > user> (update {} :a identity) ;; missing returns nil > {:a nil} > > * [CLJ-1251](http://dev.clojure.org/jira/browse/CLJ-1251) > > ## 2 Enhancements > > ### 2.1 Error messages > > * [CLJ-1261](http://dev.clojure.org/jira/browse/CLJ-1261) > Invalid defrecord results in exception attributed to consuming ns > instead of defrecord ns > * [CLJ-1169](http://dev.clojure.org/jira/browse/CLJ-1169) > Report line,column, and source in defmacro errors > * [CLJ-1297](http://dev.clojure.org/jira/browse/CLJ-1297) > Give more specific hint if namespace with "-" not found to check file > uses "_" > > ### 2.2 Documentation strings > > * [CLJ-1417](http://dev.clojure.org/jira/browse/CLJ-1417) > clojure.java.io/input-stream has incorrect docstring > * [CLJ-1357](http://dev.clojure.org/jira/browse/CLJ-1357) > Fix typo in gen-class doc-string > * [CLJ-1479](http://dev.clojure.org/jira/browse/CLJ-1479) > Fix typo in filterv example > * [CLJ-1480](http://dev.clojure.org/jira/browse/CLJ-1480) > Fix typo in defmulti docstring > * [CLJ-1477](http://dev.clojure.org/jira/browse/CLJ-1477) > Fix typo in deftype docstring > * [CLJ-1478](http://dev.clojure.org/jira/browse/CLJ-1378) > Fix typo in clojure.main usage > > ### 2.3 Performance > > * [CLJ-1430](http://dev.clojure.org/jira/browse/CLJ-1430) > Improve performance of partial with more unrolling > * [CLJ-1384](http://dev.clojure.org/jira/browse/CLJ-1384) > clojure.core/set should use transients for better performance > * [CLJ-1429](http://dev.clojure.org/jira/browse/CLJ-1429) > Cache unknown multimethod value default dispatch > * [CLJ-1529](http://dev.clojure.org/jira/browse/CLJ-1529) (alpha4) > Reduce compile times by avoiding unnecessary calls to Class.forName() > > ### 2.4 Other enhancements > > * [CLJ-1191](http://dev.clojure.org/jira/browse/CLJ-1191) > Improve apropos to show some indication of namespace of symbols found > * [CLJ-1378](http://dev.clojure.org/jira/browse/CLJ-1378) > Hints don't work with #() form of function > * [CLJ-1498](http://dev.clojure.org/jira/browse/CLJ-1498) > Removes owner-thread check from transients - this check was preventing > some valid usage of transients in core.async where a transient is created > on one thread and then used again in another pooled thread (while still > maintaining thread isolation). > * [CLJ-803](http://dev.clojure.org/jira/browse/CLJ-803) > Extracted IAtom interface implemented by Atom. > * [CLJ-1315](http://dev.clojure.org/jira/browse/CLJ-1315) > Don't initialize classes when importing them > * [CLJ-1330](http://dev.clojure.org/jira/browse/CLJ-1330) (alpha4) > Class name clash between top-level functions and defn'ed ones > * [CLJ-1349](http://dev.clojure.org/jira/browse/CLJ-1349) (alpha4) > Update to latest test.generative and add dependency on test.check > > ## 3 Bug Fixes > > * [CLJ-1362](http://dev.clojure.org/jira/browse/CLJ-1362) > Reduce broken on some primitive vectors > * [CLJ-1388](http://dev.clojure.org/jira/browse/CLJ-1388) > Equality bug on records created with nested calls to map->record > * [CLJ-1274](http://dev.clojure.org/jira/browse/CLJ-1274) > Unable to set compiler options via system properties except for AOT > compilation > * [CLJ-1241](http://dev.clojure.org/jira/browse/CLJ-1241) > NPE when AOTing overrided clojure.core functions > * [CLJ-1185](http://dev.clojure.org/jira/browse/CLJ-1185) > reductions does not check for reduced value > * [CLJ-1039](http://dev.clojure.org/jira/browse/CLJ-1039) > Using def with metadata {:type :anything} throws ClassCastException > during printing > * [CLJ-887](http://dev.clojure.org/jira/browse/CLJ-887) > Error when calling primitive functions with destructuring in the arg > vector > * [CLJ-823](http://dev.clojure.org/jira/browse/CLJ-823) > Piping seque into seque can deadlock > * [CLJ-738](http://dev.clojure.org/jira/browse/CLJ-738) > <= is incorrect when args include Double/NaN > * [CLJ-1408](http://dev.clojure.org/jira/browse/CLJ-1408) > Make cached string value of Keyword and Symbol transient > * [CLJ-1466](http://dev.clojure.org/jira/browse/CLJ-1466) > clojure.core/bean should implement Iterable > * [CLJ-1578](http://dev.clojure.org/jira/browse/CLJ-1578) (alpha4) > Make refer of Clojure core function not throw exception on reload > * [CLJ-1501](http://dev.clojure.org/jira/browse/CLJ-1501) (alpha4) > LazySeq equals() should not use equiv() logic > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
