pdf version page 165:
"
Promises don’t detect cyclic dependencies
This means that (deliver p @p), where p is a promise, will block
indefinitely.
However, such blocked promises are not locked down, and the situation can
be resolved:
(def a (promise)) (def b (promise))
(future (deliver a @b)
I don't use schema/core.typed much in my actual projects, while I have done
many attempts it just never worked out. I like the idea and should
definitely use them more but it is just too much of a moving system and not
stable enough yet (eg. didn't even know s/either is deprecated).
If you look at
On 8 September 2015 at 11:38, Thomas Heller wrote:
>
> If you look at these implementations
>
> (def OneOff [(s/one s/Str 'name) (s/one s/Str 'email)])
>
> (s/defrecord OneOff
> [name :- s/Str
> email :- s/Str])
>
> (defrecord OneOff [name email])
>
> All of them do more or less the same
>
>
> For instance, which one of these to you consider to be the best
> representation of a event to set the expiry time:
>
>[:cache/expire #inst "2015-09-08T12:00:00Z"]
>
>{:type :cache/expire, :value #inst "2015-09-08T12:00:00Z"}
>
>#cache.Expire [#inst "2015-09-08T12:00:00Z"]
>
>
Johnny,
On Tue, Sep 8, 2015 at 11:32 AM, Johnny Wong
wrote:
>
> why " deliver a @b is going to fail " ? 1 and 2 are just two
> independent threads , "deliver a 42" will unblock thread 2 , and then
> thread 1 will be unblocked .
>
Thread 1 is waiting on delivering a result to "a", though, which
I'm finally looking at warn on reflection. Everything is going fine except
in the nodes.clj file where I define a protocol, INode, with a method,
new-node and then try to call that method from a function, revise.
I'm using Clojure 1.7.0 and the file
is https://github.com/laforge49/aatree/blob/m
On Tue, Sep 8, 2015 at 9:31 PM, William la Forge
wrote:
> I'm finally looking at warn on reflection. Everything is going fine except
> in the nodes.clj file where I define a protocol, INode, with a method,
> new-node and then try to call that method from a function, revise.
>
> I'm using Clojure
I don't quite understand why you are not calling the Protocol method as a
function, i.e.
(new-node this t-2 lev l r c)
(no leading dot on new-node).
I also don't see anything which actually *implements* INode.
Note that the meaning of "method" in "Protocol method" is not the same as
in "Java
aatree.nodes.INode always gives me a class not found. But switching to
definterface does it for me.
Many thanks!
On Tuesday, September 8, 2015 at 3:16:56 PM UTC-4, Andrey Antukh wrote:
>
>
>
> On Tue, Sep 8, 2015 at 9:31 PM, William la Forge > wrote:
>
>> I'm finally looking at warn on reflecti
Frances,
I have two implementations of INode, record MapNode and record VectorNode,
which are defined in other files.
Also, I get a syntax method when calling new-node without the leading dot
when using defprotocol:
java.lang.IllegalArgumentException: No single method: newNode of interface:
a
This is a ClojureScript viewer and editor you can embed in any website. I
hope to make it better than CodeMirror for those who don't need polyglot
support. I announced it last week but it was pretty much unusable because
it didn't have paren completion. Now it is slightly more usable. Here are
For me, the instarepl column seems to be unreadable because all the results
have horizontal scrollbars that entirely obscure the results.
On Tue, Sep 8, 2015 at 4:38 PM, Zach Oakes wrote:
> This is a ClojureScript viewer and editor you can embed in any website. I
> hope to make it better than Co
My understanding is that invocation of protocol methods incurs about 30%
overhead due to the need to look up the appropriate function for the type.
I also learned recently that Clojure does not use static type information
to do the lookup at compile-time and avoid the overhead. Given that Clojure
a
Yeah I should've tested on a non-Mac. That should just be a CSS change if there
is a way to make scrollbars disappear. I'll look into it soon.
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This library allows using mixfix operators with easy definitions in
clojure, so it is possible to write code like this:
(defn myfun [x y]
(if x < 2 then x + y - 1 else (x + y) * 2))
Or for some EDSL (in this example SQL-like):
(exec (select * from table1, table2 where col1 < col2 group by c
This library allows using mixfix operators with easy definitions in
clojure,
so it is possible to write code like this:
(defn myfun [x y]
(if x < 2 then x + y - 1 else (x + y) * 2))
Or for some EDSL (in this example SQL-like)
(exec (select * from table1, table2 where col1 < col2 group
The Readme is excellent and illuminates some of the depth behind the brief
example that opened this thread. If it is possible for depth to be
behind. In this case I believe it is.
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To post to this gro
Mongologic provides several tools to make the development of MongoDB-backed
applications easier and faster:
- Callbacks in the lifecycle of records (à la Rails' Active Record)
- Uniqueness validation
- Range-based pagination
- History
https://github.com/xavi/mongologic
I hope you find it usefu
I'm not an expert on this subject, but two thoughts come to mind:
1. the point of protocols is polymorphism, and if I understand you
correctly, the case you're describing is narrowed enough that it is *not*
polymorphic -- i.e., if the compiler can statically determine what code to
>> My understanding is that invocation of protocol methods incurs about 30%
overhead due to the need to look up the appropriate function for the type.
I'd like to see some benchmarks on that. Protocols are actually quite fast,
and if you create the protocol first, then implement a type using that
I'm bad at CSS, but it looks like there isn't a standard way to hide
scrollbars in browsers without removing the ability to scroll. Are you
using Windows? Maybe I can boot up a VM and try things out to fix this
issue.
On Tuesday, September 8, 2015 at 5:05:32 PM UTC-4, Zach Oakes wrote:
>
> Yeah
I should have given you that information up front, sorry.
I just tried it in Windows 10 using both Edge and Chrome and both have
scrollbars. Earlier I was using Chrome in Windows 7.
I was able to fix it in the inspector using "overflow: hidden":
.paren-soup .instarepl .result {
position: rel
Thanks, I just made the change in both the release zip and the demo. I was
aware of "overflow: hidden", but it prevents you from scrolling with your
mouse/trackpad either, so results that can't fit will just be cut off.
However, I think supporting browsers and OSes that have visible scrollers
i
Protocol callsites are already optimized in clojure.
Here's the emitted bytecode for a protocol invocation:
0: aload_0
1: aconst_null
2: astore_0
3: dup
4: invokestatic #36 // Method
clojure/lang/Util.classOf:(Ljava/lang/Object;)Ljava
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