In core.match, what's the difference between predicates (:when) and guards (:guard)?

I can't really figure out what the deal is with predicates. They're not mentioned in the Basic/Advanced usage wiki pages at all. The code for Guards and Predicates is basically identical. The only difference that I've been able to find (beyond the spelling, obviously): - predicates can only

Re: mexpand on macrolet

This worked for me (after some experimentation): (pprint (mexpand-1 '(symbol-macrolet [b (+ 1 2)] b))) ;; (do (+ 1 2)) ;; nil Cheers, H On Saturday, 5 December 2015 07:45:38 UTC, Ritchie Cai wrote: > > I'm not sure how to print a macroexpand on macros that defined in macrolet > or

reducers and sets/PersistentSet

Hi there, I was playing with reducers recently, and was wondering why PersistentSets aren't foldable (i.e. don't take advantage of the Fork/Join stuff? Is there some fundamental reason why it wouldn't work (or is especially difficult), or just a case that no one has gotten around to

Re: reducers and sets/PersistentSet

od, so in principle > doesn't seem like there's any reason that shouldn't work. > > On Tuesday, November 10, 2015 at 10:23:19 AM UTC-6, retnuH wrote: >> >> Hi there, I was playing with reducers recently, and was wondering why >> PersistentSets aren't foldable (i.e. don'

Strange error (to me) trying to use core.logic.fd

, compiling:(I:\Users\retnuH\projects\clojure\stuff\src\whatevs.clj:15:19) at clojure.lang.Compiler.analyzeSeq(Compiler.java:6651) at clojure.lang.Compiler.analyze(Compiler.java:6445) at clojure.lang.Compiler.analyze(Compiler.java:6406) at clojure.lang.Compiler$InvokeExpr.parse(Compiler.java:3719

Possible bug in reducer code? Or dead code? Or derp on my part?

Hi there, I've been browsing through the code trying to wrap my head the new reducers library. I came across 2 functions called 'reduce' in APersistentVector.java around line 447. The don't have the same 'reduced?' check that ArrayChunk.java has in it's implementation of reduce (around line