Given how long clojure-contrib has been deprecated, I'm not going to
prioritize this unless there is a specific reproducible issue that is
related to 1.7 vs 1.8.
On Monday, December 7, 2015 at 11:46:30 PM UTC-6, Sean Grove wrote:
>
> It's not super compelling for us (we can upgrade with some
Thank you for your answers.
Especially, thanks to Colin for such a detailed answer.
Regards,
Timur
On Saturday, December 5, 2015 at 5:52:35 PM UTC+1, Magnus Therning wrote:
>
>
> Timur writes:
>
> > Hi all,
> >
> > I'm using Clojure to build a set of services.
> >
> > Development with
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
Thanks Jason,
I don’t particularly want dynamic registration; when the ‘world’ is
instantiated it can now about the observers.
I could do this but it is missing the ‘filter out uninteresting events’ bit. I
want each observer to declare its interest.
Your ‘middleware pattern’ however is
It looks like you want dynamic registration of event handlers, which is not
something I've done. If you *didn't* want that, then this the middleware
pattern:
(defn null-processor
[world event]
world)
(defn some-other-middleware
[handler]
(fn [world event]
...
(handler world
Here are some functional programming job opportunities that were posted
recently:
Haskell Engineer at Wagon
https://functionaljobs.com/jobs/8868-haskell-engineer-at-wagon
Cheers,
Sean Murphy
FunctionalJobs.com
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Good point, Colin, about mixed refs and atoms. That might change things a
little (although in my years of Clojure, I have never needed to mix them to
the point of needing to clarify).
I would still prefer a textually descriptive name over a symbolic prefix or
suffix in this case though. At the
Just found that talks are available on Skills Matter
https://skillsmatter.com/conferences/6861-clojure-exchange-2015#skillscasts
Eric
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On the contrary, I find that when I have something in my app like a
shopping-cart, there are usually two flavors of functions. On the one
hand, there will be helper functions that take an immutable shopping-cart
and return a new immutable shopping-cart. But on the other hand, there
will also be
I personally don't like this.
An atom won't suddenly change value without your knowledge because to get
its value, you must use @ or deref (which should be a big warning that,
yes, this value might change between calls to deref).
Adding sigils, in my opinion, adds to the noise and makes it
+1.
I haven’t done an extensive study, but I am sure all of my atoms’s stand out
from other fns/vars because the name makes it obvious. For example,
‘shopping-cart’ can _only_ sensibly be state which can only be an atom.
Having said that, if I had mixed refs and atoms then I might consider
Sure - but if I saw a reference (no pun intended) to ‘shopping-cart’ I would
expect that to be stateful. Fns which take something and return something else
I tend to name `something->something-else`. In other words, I am unlikely to
have a var whose name is a lower-case noun that isn’t state.
Hi all,
(apologies for the wall of text but I think the context might be useful)
I am using event sourcing so the world, at any given point in time is
simply a `reduce` over those events. Throughout the application different
things are interested in different events.
A design that is
True! But from what I understand of the way symbol-macrolet works, it's
not possible to do one without the other. symbol-macrolet actually looks
for only symbols in the forms you pass it after the let bindings; it won't
traverse inside any quoted forms. It also takes care not to override the
Just a reminder that this is a release candidate - that means that if we
don't hear any issues, we will release it as 1.8.0.
If you haven't yet, please give it a try
Thanks,
Alex
On Wednesday, December 2, 2015 at 10:03:31 AM UTC-6, Alex Miller wrote:
>
> Clojure 1.8.0-RC3 is now
Library for helping print things prettily, in Clojure - ANSI fonts,
formatted exceptions
This release improves Leiningen integration; when Pretty is used as a
plugin, it is enabled for both REPL and for tests.
Pretty has been updated for Clojure 1.8, specifically, to recognize direct
linked
Hi Hunter,
however, in this way you are expanding the application of the macro
"symbol-macrolet" (which is itself a macro), not just the symbol macro "b":
(pprint (mexpand-1 '(symbol-macrolet [b (+ 1 2)] b ["something" "else"])))
;; (do (+ 1 2) ["something" "else"])
;; nil
cheers,
Gianluca
On
Happy to consider stuff like that, sooner better than later though.
The only var in core that has been marked ^:redef so far is
clojure.core/load.
On Monday, December 7, 2015 at 7:47:15 PM UTC-6, Howard M. Lewis Ship wrote:
>
> I suspect there's a few cases where we would like to use direct
Re CLJ-1863, this was already problematic before 1.8 in some contexts. I would
say it's undecided.
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We’ve had it in QA since 12/2 but it hasn’t had much of a work out yet due to
various staff vacations etc. This build is our first with direct linking
enabled for our whole code base. I don’t know when we’ll get it into production.
We’ve had RC2 in production since 11/24 with no issues. That
Hiya,
I did consider (and have used) guarded visitors before but I discounted them
because ‘action!’ ended up having the `case` statement when that visitor was
interested in multiple events. I guess I could have one visitor per event ….
To be specific, these visitors are pure, read-only
I have done my usual 'mvn clean test' on multiple OS/JDK combos not tested
on build.clojure.org, and found nothing amiss with 1.8.0-RC3.
Is http://dev.clojure.org/jira/browse/CLJ-1863 considered problematic
enough to fix before 1.8.0 goes out?
Andy
On Mon, Dec 7, 2015 at 1:36 PM, Alex Miller
What I’ve done in a similar situation is having a protocol defined
like so:
(defprotocol Transition
(valid? [this world input] “Checks if the transition is valid
for this input given the state of the world”)
(action! [this world input] “Changes the state of the world
based
I suspect there's a few cases where we would like to use direct linking,
but will not be able to, because it will disrupt a 3rd party library we
use. This is hypothetical, so I'll keep you posted ... I may run some
experiments in the next couple of days.
Certainly, the use of alter-var-root by,
It's not super compelling for us (we can upgrade with some work), but we've
run into an issue with [org.clojure/clojure-contrib "1.2.0"] when
requiring clojure.contrib.math:
Exception in thread "main" java.lang.RuntimeException: Unable to resolve
symbol: remainder in this context,
On Tuesday, 8 December 2015 07:17:15 UTC+5:30, Howard M. Lewis Ship wrote:
>
> I suspect there's a few cases where we would like to use direct linking,
> but will not be able to, because it will disrupt a 3rd party library we
> use. This is hypothetical, so I'll keep you posted ... I may run
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