#clojure – 2015-12-17

2015-12-17

00:29	owlbird	The jdbc API of clojure will return a list including the count of affected record, it's possible to get a number directly while querying count/sum with :result-set-fn first, but what's best way to get the number of affected records while updating?
00:30	owlbird	I write (first (jdbc/xxx)), which seems ugly, and the result-set-fn was not supported by jdbc/update serials API
02:38	kenrestivo	does something like this already exist? https://www.refheap.com/112791
02:39	danneu	owlbird: `with rows_affected as (UPDATE ... RETURNING 1) select count(*) from rows_affected`
02:39	danneu	idk
03:10	keep_learning	Hello all
03:11	keep_learning	I am trying to parse web page but the data part is mostly rendered by javascript
03:11	keep_learning	so when ever I am downloading the page it contains javascript but not the data
03:11	keep_learning	Could some one please tell me how to simulate browser behaviour
03:11	keep_learning	to render the data
05:45	TEttinger	Sorella! I remember you from livescript! I can't remember if you've used clojure before
05:46	Sorella	TEttinger: I've been using Clojure for a couple of years, did a few projects at work with it (including a VM for a live programming platform running a Self dialect, which was fun)
05:46	TEttinger	cool!
05:46	TEttinger	I've been uh... mostly writing java
05:47	TEttinger	trying to avoid helsinki affliction
05:47	TEttinger	stockholm syndrome I've got plenty
06:53	lkollar	keep_learning: you can use phantomjs to evaluate javascript
06:53	lkollar	http://blog.zolotko.me/2012/12/clojure-selenium-webdriver-and-phantomjs.html
07:53	Gonzih	Hi guys, we are organizing 1 day clojure conference in Amsterdam! more info here: http://clojuredays.org
07:58	beaky	hello
07:58	beaky	wow
08:09	Gonzih	so yeah, it's free event btw :)
08:14	lokien_	Hello! What exercises do you guys recommend? I'm bored reading books all the time
08:15	shoky	lokien_ https://www.4clojure.com/
08:16	lokien_	Thank you shoky
09:00	oracle	what's the meaning of the last parameter (where ...)?
09:00	oracle	(alter-var-root (var driver)
09:00	oracle	(constantly new-driver)
09:00	oracle	(when (thread-bound? (var driver))
09:00	oracle	(set! driver new-driver)))
09:01	oracle	that (when ...) is a paramter, but it doesn't return anything.
09:13	gfredericks	hiredman: oh that was more succinct than I expected; thanks
09:32	oracle	I defined a var like (def firefox_brower some_specificiation_for_firefox)
09:32	oracle	and used core.aysnc, and then I found the code of (def firef...) run twice,
09:33	oracle	since I saw two firefox stared up
09:33	oracle	since core.async could kick off multiple threads, so will (def ...) run for each thread?
09:34	oracle	If I run lein repl, then I only saw one firefox.
09:35	oracle	but if run lein run, it will startup 2 firefox. But the main function doesn't call any code to startup firefox, only some code for core.async
10:21	benjyz1	hello
10:21	benjyz1	are there are any pure clojure TCP libraries?
10:21	benjyz1	or anybody aware of work in this area?
10:23	beaky	hello
10:24	prateekbhatt	Hi I am trying to setup ac-cider with cider
10:24	prateekbhatt	I keep getting the error (error "Not a nREPL dict object: rem")
10:24	prateekbhatt	on trying to autocomplete on any keyword
10:27	dxlr8r	say I have go-loop with async/timeout in it. the loop runs for ever. is there any way to stop if from repl? or do I need to implement some logic inside the loop in order to stop it?
11:20	socksy	in the example projects for sente, the defmethods for a multimethod are defined inside of a (do) form. Is this a thing? What does it do differently from defining at the top level?
11:54	dxlr8r	try and see :) I am looking at sente to atm
11:58	socksy	I mean, I am trying it, and not seeing a difference
12:03	dxlr8r	yeah, I looked at that block to. maybe he had more stuff in the block before and removed it
12:03	dxlr8r	back then I might had made sense, but not now
12:05	socksy	but even if he had more stuff in there, it doesn't make any sense to put it in a do
12:05	socksy	since it was only definitions
12:07	dxlr8r	true
12:07	dxlr8r	now that I look at it, it actually makes sense
12:08	dxlr8r	I looked upon my modified version, where I had split the cljx file
12:09	dxlr8r	since it's cljx he uses do in order to not type #+cljs in front of all the domethods
12:09	dxlr8r	reads better to I think, you know right away that all this is for cljs only, not clj
12:11	socksy	aha, i'm reading the boot-sente example, so in that case it was probably kept from that
12:11	socksy	(where clj and cljs are split)
12:12	dxlr8r	:)
12:48	justin_smith	oracle: generally you shouldn't ever have side effects at the top level - for example that def would start up firefox while building an uberjar or running your tests (probably not things you want)
12:52	justin_smith	oracle: a common way to deal with this are to use an atom or delay or promise that will hold the firefox-browser value, then an init function (called in your -main) that actually starts up firefox and connects your handle to the container
14:10	devth_	for a long time i've used ns-resolve to dynamically look up expected functions in two namespaces (e.g. irc and slack - they are chat adapters). should i use protocols and deftype instead? then I can create instances of the type in each instance and dispatch based on that. right? i've avoided protocols for years :/
14:11	devth	*in each namespace, and register them in some known place (i.e. swap an atom)
14:11	justin_smith	yes, protocols are the cleaner way to do this
14:12	devth	thought so, just wanted to make sure i wasn't misunderstanding. thanks justin_smith
14:12	justin_smith	and yeah, you could use deftype, or defrecord, but for something which will only ever have one instance it can be easier to just use reify
14:13	devth	wouldn't irc and slack each have their own instance?
14:14	justin_smith	devth: the idea with protocols is you can use them where you want the runtime app to be able to provide you with some thing, but you know you can do specific defined operations on that thing even if its definition isn't accessible to your code. You already do this with IFn probably - eg. map doesn't need to have access to your functions definition, the fact that it is IFn and because of that you can call it is all the map really needs :)
14:14	devth	something like (deftype Adapter [name] ...) (def slack (Adapter. "slack") (def irc (Adapater. "irc")
14:14	justin_smith	devth: right irc, and slack, would each be a seperate reification
14:14	justin_smith	devth: my point was that you wouldn't have two ircs, or two slacks
14:15	devth	oh, right
14:15	justin_smith	(but if you would have that, yeah, use deftype or defrecord instead of reify)
14:15	devth	got it. thx!
14:16	justin_smith	devth: but yeah, it's really not more complicated than how map can use anything that's an IFn
14:16	devth	right. i was always afraid it was too java-y or something :)
14:16	justin_smith	devth: what separates this from java is that concrete inheretence is not possible
14:17	justin_smith	it's really closer to how haskell does it (and java just did a half ass version of what haskell was already doing anyway)
14:17	devth	are you referring to the ad-hoc nature of it?
14:18	devth	and i'm guessing you're referring to haskell's type classes
14:18	justin_smith	devth: the fact that haskell had parametric polymorphism via typeclasses, and java copied that but mixed it with some grotesque OO garbage
14:18	justin_smith	what clojure does is closer to the haskell version (on top of java's vm, of course)
14:18	devth	right
14:19	justin_smith	right
14:19	devth	and then there's scala
14:19	justin_smith	maybe other folks have something nice to say about scala, I'll hold back on that topic
14:20	devth	i use it but i don't mind bashing :)
14:45	ghost_	Hey, what are multimethods and what are they for? I tried to read about them on clojure.org but I don't understand anything
14:52	postpunkjustin	ghost_: they let you do function dispatch on whatever you want. Similar to how some other languages let you overload functions based on the type of the argument, but more flexible.
14:53	ghost_	postpunkjustin: so, different actions on different arguments? on steroids?
14:54	xemdetia	ghost_, it's like having in an OO language an .add(String) and an .add(Int) for the same object but with steroids
14:54	ddellacosta	ghost_: I think the top answer here is pretty good: http://stackoverflow.com/questions/8070368/clojure-multimethods-vs-protocols
14:54	ghost_	xemedetia: shh, I don't know OOP
14:54	ddellacosta	if you are just dispatching on type, a lot of the time using protocols is the way to go
14:54	ghost_	xemdetia*
14:55	xemdetia	ghost_, its like having a struct with an enum defining type and a union of multiple datatypes, and through a main dispatch function of add(struct) you call add_int(struct) and add_string(struct) to do what you need to do.
14:55	ddellacosta	mikera's answer is worth reading too on that page
14:55	xemdetia	:)
14:55	ghost_	xemdetia: shh, I don't know C
14:55	xemdetia	ghost_, use lots of gotos
14:56	ghost_	xemdetia: oh, it's clear now
14:56	ghost_	ddellacosta: reading
14:56	ddellacosta	:-p
14:56	ghost_	nah, I'm just smiling
14:57	ghost_	"but if you need to dispatch based on the phase of the moon as seen from mars then multimethods are your best choice."
14:57	ghost_	yeah, very helpful, ddellacosta
14:57	ddellacosta	ghost_: great
14:58	ghost_	nvm, I'll just read it. thanks for help
15:03	ghost_	ddellacosta: last question - so, I create a function, then write that multimethod which depends on output of that first function. yeah?
15:05	ddellacosta	ghost_: sorry, are you asking about the dispatch function?
15:05	dxlr8r	say I have go-loop with async/timeout in it. the loop runs for ever. is there any way to stop if from repl? or do I need to implement some logic inside the loop in order to stop it?
15:05	ghost_	ddellacosta: it's in the mikera's answer you linked me
15:05	dxlr8r	i tried close!
15:06	ddellacosta	ghost_: i.e. what is "balance-available?" doing?
15:06	musteresel	Hi. I need to write some simulation software. This simulation is going to be controllable by my students. As they only know Java, I thought about providing some interfaces for them to implement. On the other hand, I want to implement the simulation in clojure for obvious reasons. Is there a "standard" way of doing so? I know Java/Clojure interop is excellent, what I'm looking for is an "approach" such that the students will only s
15:06	musteresel	their interfaces (for example an interface IX) and a "Simulation" class such that in their code they'll have something like Simulation s = new Simulation(new IX() { /* Implement stuff */ }); s.run(); but won't have to deal with any clojure stuff.
15:06	ddellacosta	but yeah, that's your dispatch function
15:08	justin_smith	musteresel: easiest is probably to make your interface in java, tell them to implement based on that, and then write clojure code that uses objects of that interface
15:08	ghost_	ddellacosta: generally, I know what they're doing. but I don't know if I got the concept correctly
15:09	ghost_	it's just as calling different functions depending on other function's output? but cleaner?
15:10	ghost_	like (if (true? withdraw) (call-first-function params) (call-second-function params))?
15:10	justin_smith	ghost_: the dispatch function decides which of your implementation functions gets called, and you don't need to make a big case statement or whatever, yeah
15:10	justin_smith	or if
15:11	ghost_	justin_smith: that's what I meant. thanks a lot
15:12	musteresel	justin_smith: I'm a bit concerned about immutability / mutability. Writing the simulation in idiomatic clojure I'm probably going for a purely functional approach. But then, using for example a plain java array (that needs to be rebuild in each simulation step) is going to be a costly thing. Can I somehow take advantage of clojure's persistent data structures without exposing them? Do they, for example, implement Java Interfaces l
15:12	musteresel	say Collection? (I guess not)
15:13	xemdetia	musteresel, only if you give them an interface to that resource
15:14	xemdetia	if anything it sounds like what justin_smith described - students have to implement an interface, and if they need resources from the system you should provide another interface that you implement that tells them what they can ask for, and you can write up a simple java class to implement that interface and provide dummy data
15:15	jjttjj	uuhhh what's the word(s) to describe the (bad) use of defining top level vars in a library, for example (def)ing a connection var right in a database library (instead of leaving that for the user to do)
15:15	jjttjj	too much top-level state?
15:15	xemdetia	jjttjj, http://dl.acm.org/citation.cfm?id=953355
15:15	xemdetia	probably this
15:15	ystael	musteresel: The basic Clojure data structures do implement the Java interfaces you want them to, for instance, APersistentVector implements Iterable, List, Comparable, Serializable among others
15:16	jjttjj	xemdetia: thanks!
15:19	musteresel	ystael: They do? That's awesome, I guess I can then just give them an interface (like xemedita suggested) wiht a method like Iterable<Data> getDataObjects(). I'll try that, it should do the trick :)
15:19	musteresel	Thank you all :)
15:43	cap10morgan	Anyone else seeing “Args out of range: -1, -1” errors in Emacs when you have a CIDER REPL running and you hit Enter to create a new line in a Clojure buffer (and then your code doesn’t auto-indent; the point stays at column 0)? Latest versions of all the things.
15:50	justin_smith	cap10morgan: in emacs "Args out of range: -1, -1" is a sign that some command wants to access a range of the buffer contents, but the range is not findable (you may already know this)
15:50	cap10morgan	justin_smith: I did not know that, thanks.
16:05	justin_smith	cap10morgan: also, did you just update recently?
16:06	cap10morgan	justin_smith: yes, I'm running CIDER 0.10 (and the latest versions of pretty much everything else)
16:06	justin_smith	cap10morgan: because cider often has the problem of things breaking if you try to update in place, so the best options are to completely uninstall then install the newer version, or to delete all your elc files
16:06	cap10morgan	justin_smith: ah, sure. good idea, I'll give that a try.
17:12	sdegutis	Is it possible to use ClojureScript with advanced-optimization enabled inside a Clojure process without actually touching the real filesystem for any of the compilation, and end up with a single string representing the entire JavaScript program after advanced compilation?
17:24	benjyz1	hi. what's the best way to update a map?
17:25	justin_smith	benjyz1: what kind of update are you trying to do? usually you want assoc. But, to be pedantic, you can't change a map, you can only make a new map derived from it.
17:26	benjyz1	{:a b} => {:a c}
17:26	benjyz1	{:a :b} => {:a :c}
17:26	benjyz1	,(def m {:a :b})
17:26	justin_smith	,(assoc {:a :b} :a :c)
17:26	clojurebot	eval service is offline
17:26	clojurebot	eval service is offline
17:26	blischalk	Is it possible in prismatic schema to define a schemaless map? E.g In compojure-api I want to say that I want to accept a map but that the structure of the map can be anything.
17:31	justin_smith	blischalk: perhaps something like {s/Any s/Any}
17:31	one	how can i use a variable as an idex for a map?
17:31	justin_smith	one: by using a variable as an index for a map
17:32	justin_smith	,(def idx :a)
17:32	clojurebot	#'sandbox/idx
17:32	one	i mean how do i pass it
17:32	justin_smith	,(assoc {} idx 0)
17:32	clojurebot	{:a 0}
17:32	justin_smith	,(get (assoc {} idx 0) idx)
17:32	clojurebot	0
17:32	justin_smith	,{idx 0}
17:32	clojurebot	{:a 0}
17:33	one	if x is my map, {:abc 123}, and y = "abc"
17:34	felixn	hey is there a reason I would use (keyword 'foo) instead of :foo? is it there so I can escape a string if it's not written?
17:34	justin_smith	,(get {:abc 123} (keyword "abc"))
17:34	clojurebot	123
17:34	one	than you
17:34	amalloy	one: are you sure you want the map to have keyword keys, if you're looking up strings in it? can you just make the map have strings?
17:34	one	thank
17:35	justin_smith	felixn: (keyword 'foo) is weird
17:35	justin_smith	amalloy: excellent point
17:35	one	its something im getting from an elastic search response
17:35	amalloy	people so often seem to think only keywords are valid map keys
17:35	one	it has to be grouped by a certain field that isnt determined
17:36	justin_smith	amalloy: see also, doing a tree walk and converting every string key to a keyword key, when you only access one value in the map
17:36	amalloy	i haven't seen that one much
17:37	justin_smith	amalloy: cargo culting while using json apis
17:37	TEttinger	,(defn random-string [] (apply str (repeatedly (+ 2 (rand-int 6)) #(char (+ (int \a) (rand-int 26))))))
17:37	clojurebot	#'sandbox/random-string
17:37	TEttinger	,(random-string)
17:38	clojurebot	"yorqj"
17:38	TEttinger	,(keyword (random-string))
17:38	clojurebot	:ygsg
17:38	TEttinger	,(keyword (random-string))
17:38	clojurebot	:id
17:38	blischalk	justin_smith: It seems to give “Bad explicit key: schema.core.AnythingSchema”
17:38	TEttinger	ha nice
17:38	justin_smith	blischalk: oh, I'm not sure what the answer is there
17:38	justin_smith	blischalk: is there a s/Map?
17:39	blischalk	justin_smith: doesn’t seem to be
17:40	blischalk	justin_smith: “No such var: s/Map”
17:41	justin_smith	blischalk: I figured it out in my repl
17:41	blischalk	justin_smith: Awesome! What’d ya find?
17:42	justin_smith	blischalk: spoke too soon!
17:42	justin_smith	but (s/check {} {}) works, haha
17:44	justin_smith	blischalk: wait - the first thing I suggested totally works (s/check {s/Any s/Any} {:a 0 :b 1}) -> nil
17:46	justin_smith	blischalk: that checks, and as expected the one way to make that check fail is to provide an arg that is not a map
17:47	blischalk	justin_smith: using (s/defschema MySchema
17:47	blischalk	{:query {s/Any s/Any}
17:47	blischalk	:some_id java.lang.Long
17:47	blischalk	:foos {s/Any s/Any}
17:47	blischalk	:id String})
17:47	blischalk	schema.core in compojure-api is saying “Bad explicit key: schema.core.AnythingSchema”
17:48	justin_smith	blischalk that schema definition compiles here
17:49	blischalk	justin_smith: It compiles but when I visit the swagger ui it throws a runtime exception
17:49	justin_smith	blischalk: I am using schema 0.4.3, what's your version? sounds like a swagger bug
17:49	Deraen	blischalk: Use {s/Keyword s/Any}
17:50	felixn	is there an idiomatic way to create enums? I googled and someone said use keywords, but now I want to parameterize the data type (:foo [1 2 3]) is no good XD I guess I could use a list/map, but is that idiomatic?
17:51	justin_smith	felixn: clearly you don't mean jvm enums
17:51	justin_smith	felixn: why not [:foo [1 2 3]] ?
17:51	felixn	really just algebraic data types like haskell
17:52	felixn	ok yea, list works then!
17:52	justin_smith	felixn: vector
17:52	amalloy	felixn: there's not really good support for ADTs
17:52	justin_smith	tis true
17:53	blischalk	justin_smith: [prismatic/schema "1.0.4"] is what compojure-api is using currently
17:53	justin_smith	blischalk: yeah, I had no idea I was using such an old version...
17:53	justin_smith	one moment, going to see how things look when I bump my version
17:55	justin_smith	blischalk: {s/Any s/Any} is still a valid schema that passes for any hash map (including empty) as of 1.0.4, I just upgraded
17:56	blischalk	Deraen: That seems to work!
17:56	blischalk	Thanks justin_smith and Deraen.
17:56	ridcully	(inc justin_smith)
17:57	justin_smith	blischalk: https://www.refheap.com/112831
17:57	ridcully	that reboot every second seems not that much to be on the workind side of things?
17:57	justin_smith	ridcully: I'm not sure where things ended up with lazybot
17:58	ridcully	i have a genral idea i don't like to share
17:58	justin_smith	blischalk: seems like compojure-api is doing something unusual there
17:58	Deraen	Ring-swagger doesn't currently support s/Any as key, I don't remember if there's specific reason for it but the problem is schema.core/explicit-schema-key call here: https://github.com/metosin/ring-swagger/blob/master/src/ring/swagger/json_schema.clj#L240
17:59	justin_smith	Deraen: thanks! good to have that info
18:00	justin_smith	Deraen: I guess they assume the keys would really need to all be keywords, which in that domain could make sense
18:02	Deraen	Yeah, at leason on JSON the keys are always keywords (or strings) so s/Any doesn't make that much sense. Anyway, if someone has usecase for s/Any as schema key, an issue is welcome.
18:04	justin_smith	yeah, {{:foo 0} :a} isn't going to work in json, so it makes sense there
18:05	Deraen	Unfortunately s/Str doesn't work as key either and it probably should
18:07	Deraen	Ah, s/Keyword works because it's defined as (pred keyword?) and ring-swagger filters predicates out. It should probably do the same for classes.
18:20	rbxbx_	Has anyone here used mcohen01's amazonica lib for dynamodb? Specifically performing a scan query with key-conditions.
18:20	rbxbx_	Having a difficult time sussing out the exact sort of heterogenous map it's expecting ;)
18:20	oracle	automate.core=> (get-thread-bindings)
18:20	oracle
18:20	oracle	StackOverflowError clojure.lang.PersistentHashMap$BitmapIndexedNode.index (PersistentHashMap.java:677)
18:20	oracle
18:20	oracle	why called get-thread-biddings failed?
18:24	rbxbx_	oracle: (take 1 (get-thread-bindings)) ;; => ([#'clojure.core/err #object[java.io.PrintWriter 0x47c1094 "java.io.PrintWriter@47c1094"]])
18:24	rbxbx_	It looks like it's returning an infinite sequence so you'll have to grab the part you want.
18:26	oracle	get-thread-biddings is the build-in function in clojure, why it return infinite sequence? it get the bidding vars, the vars should be finite, right?
18:29	amalloy	*1 is a thread-binding referring to the last thing returned by the repl
18:29	amalloy	if *1 is the result of get-thread-bindings, it's an infinitely self-recursive data structure
18:30	amalloy	which is fine, but when you try to print it you'll run out of stack
18:40	oracle	how to use add-watch for a var?
18:40	oracle	since a var is a per thead data, how could know which thread change?
19:06	aaelony__	Is anyone familiar with converting a msgpack file to a tab delimited file? I'm looking at [clojure-msgpack "1.1.2"] and trying (-> testfile io/input-stream java.io.DataInputStream. msg/unpack-stream), but instead of seeing data for my file, it returns 31...
19:07	aaelony__	https://github.com/edma2/clojure-msgpack/blob/master/src/msgpack/core.clj
19:11	justin_smith	oracle: I wonder if your add-watch can check which thread it is in when it gets called? not sure, I've never tried that combination of features
20:02	xeqi	I've been profiling some code and its basically 93% hashCode / 7% PersistantHashMap.cloneAndSet related to a deftype being used as keys in a hashmap. After implementing IHashEq and caching .hashcode in a volatile it gets to 66 % hashCode / 33% PersistantHashMap.cloneAndSet
20:02	xeqi	Are there any guides to implementing a good/fast hashcode for use in PHMs? or any other techniques around optimizing this area?
20:03	xeqi	* for use as objects as keys in PHMs
20:03	TEttinger	wowza
20:03	xeqi	thats what IRC is for right? harder, esoteric questions :p
20:04	TEttinger	I'd guess looking up bob jenkins' hashing page would help, maybe not for JVM stuff
20:04	TEttinger	what kind of stuff are you hashing?
20:05	xeqi	just a deftype. See LVar in https://github.com/xeqi/aurelius/blob/master/src/aurelius/unify.clj
20:07	TEttinger	my first instinct is that having any fn named . is a bad idea
20:07	TEttinger	no idea if it interoperates with .hashCode
20:07	TEttinger	,(macroexpand '(.hashCode "hey"))
20:08	clojurebot	(. "hey" hashCode)
20:10	xeqi	haha, that hasn't been a problem yet. but fair point about the expanded interop form
20:10	xeqi	I might end up doing something more along the lines of core.logic's LCons later, but was trying that out for now
20:11	TEttinger	so here's how flatland's ordered maps do their hashing https://github.com/amalloy/ordered/blob/5c07c3a72d476f19818eeffe4a07afdb63b0bbed/src/flatland/ordered/map.clj#L85-L92
20:12	TEttinger	not the type hints, use of unchecked and bitwise operations, and not relying on the default (slow) .hashCode method of objects
20:12	TEttinger	*note the
20:28	slester	hey there
20:29	slester	are there any places that one could help develop / contribute to clojure?
20:38	amalloy	TEttinger, xeqi: the stuff in flatland/ordered is just direct theft from clojure.core/hash-nordered-coll
20:38	amalloy	since i wanted it to work in versions of clojure prior to that function's addition
20:39	amalloy	and i think hashing the map itself is not actually interesting to xeqi anyway, who wanted to know how to create key objects whose hashes are good
21:03	xeqi	its semi-relevant, but since I'm not making container objects its less so.
21:05	xeqi	If I just make a global counter and inc it for each one, providing them each with unique (but linear) hashes, it ends up being 10% faster or so, and then 99% of time is in PHM/cloneAndSet
21:05	xeqi	so either I can't get much better without changing datastructures, or the visualvm sampler is not effective
21:06	xeqi	or pruning the call tree somehow
21:29	socksy	i have a cyclic dependency, anyone feeling up to suggesting some refactors?
21:30	socksy	using danielsz's system library, i have a defsystem in a systems NS
21:30	socksy	it has a DB, Sente, HTTP Kit
21:31	socksy	the second two things are depended upon a NS "server", which has an event handler that's needed to set up Sente
21:31	socksy	one of the sente events is to parse something, this is in a namespace "parser"
21:32	socksy	the parser needs access to the DB, which is in "systems"
21:32	socksy	so i have parser -> systems -> server -> parser
21:32	socksy	(server's event handler is calling the parser)
21:33	socksy	short of scrapping system altogether, or putting everything in one NS, I can't see a way around it currently
21:33	futuro	socksy: what about pulling the db code out into it's own namespace?
21:33	socksy	but then it doesn't get reloaded with the system, right?
21:34	socksy	but yeah, that's the best idea i've got so far
21:34	socksy	i suppose i can make a separate persistent state system, and treat the sente/http-kit as a system for web interaction
21:35	futuro	so the dep graph would just have the things that depend on the db declaring as such
21:35	futuro	and the db has it's own lifecycle, no?
21:36	futuro	so that triggering a restart on a higher level system causes a restart on the things it depends on
21:37	socksy	mm
21:37	clojurebot	excusez-moi
21:37	socksy	i guess i don't really get systems well enough yet :)
21:38	futuro	that'd be my recommendation. Split out the code so that each ns does one thing, then use the system library to declare your dependencies so everything gets loaded in the right order
21:38	fierycatnet	Can someone help me out with simple Reagent example. I have this code from their page http://pastebin.com/u6JK1ZvE but I can't figure out how to render the main BMI component in home-page
21:39	socksy	thanks futuro :)
21:40	futuro	np, best of luck
21:41	futuro	I am really jazzed about om.next so far
21:42	futuro	I highly recommend anyone on the fence about checking it out to give it a look
21:42	fierycatnet	any open source projects use it yet? I'd like to check out the whole SPA to study.
21:43	futuro	fierycatnet: There are some examples using om.next, but I'm not sure about anything OSS and large using it
21:44	futuro	https://github.com/swannodette/om-next-demo
21:44	futuro	that comes to mind
21:46	fierycatnet	Cool, I'll look into it later if I get my reagent page to work.
21:47	futuro	I know mfikes has tied it into ambly/React Native, so he got the autocomplete demo to run on his iphon
21:47	futuro	iphone*
22:00	socksy	nooo i can only have one system at a time
22:04	felixn	(logic/run* [q] (logic/== q (lvar "foo" false))) <-- hey, anyone know if it's possible to keep track of original names of variables after solving?
22:09	felixn	https://gist.github.com/anonymous/f4551c7afa01f4f892dd <-- this is the only approach i've came up with, then I iterate through the result reapplying the old names (only the first if a variable is shared), and if there's a new variable I generate a new name. it takes a lot of work!
23:09	slester	are there things that need to be done for clojure that a newb could do?