you could use core.async and read the values from a channel in a loop and write to the file

Not certain, but I would assume logging libraries make all kinds of optimizations to the logging process. If a flat file log is what you need, I would seriously consider just using log4j or logback.

That being said, I believe either an agent or a core.async chan+process would do what you want.

The main difference being that backpressure can be configured with core.async.

(TBH using an agent for controlled side-effects always seemed like a bit of a hack, but I think it fits the bill for some scenarios. So take that as you will )

The main benefit of agents for side effects is that they are stm aware.so you can safely send from inside a ref txn

Because agent sends are held till when the txn completes

@meikemertsch: ah thanks, great idea!

user> (var identity why is this totally ignored?)
#'clojure.core/identity

user> (throw (ex-info "lol" {}) ... or this?)
ExceptionInfo lol  clojure.core/ex-info (core.clj:4593)

any takers?

i mean understand why this happens, but i don't understand why this is allowed to happen.

both of those should throw argument errors imo.

var and throw are special forms

the compiler probably doesn't check enough

yes, i understand that.

https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/Compiler.java#L2421-L2428 throw seems like it will check

but def is a special form and

(def fe "fi" :fo :fum)
CompilerException java.lang.RuntimeException: Too many arguments to def, compiling:(/private/var/folders/sv/xytbwbxn6pg835_hkmyf8lxc0000gn/T/form-init786571130783712406.clj:1:1) 

hmm... seems like it should.

yeah def happens to handle it

in the def special form parser

var definitely doesn't check however.

https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/Compiler.java#L705

That's right, it doesn't.

@ghadi: i have the source open on my machine right now.

i suppose that deserves a patch.

i'm not sure why throw is allowing that to slide. it could be a repl thing but it doesn't seem likely.

¯\(ツ)/¯

😄

haha

looks like the patch to throw was recently added https://github.com/clojure/clojure/commit/fd50af1680f40d199bac373f4638e2dde02bfa5a

hey everyone, i am new to clojure and using http://braveclojure.com as a starting point. i hope to gain lots of knowledge from everyone here and share my experience as i embark on this journey. cheers!

Anyone have any thoughts about how Im structuring this simple component based webapp server side (i guess system.clj is a good place to start) https://github.com/nowprovision/webhookproxyweb/blob/master/src/webhookproxyweb/system.clj

to anybody using Midje autotest, is it supposed to support deleting namespaces?

After deleting/renaming some file I get a “LOAD FAILURE” and need to restart the jvm

using Midje 1.7.0

@danlebrero nope AFAIR

https://github.com/marick/Midje/issues/288 is the closest we got to that

quickly glanced at midje, it doesn't seem to use tools.namespace and instead does some ad-hoc namespace handling

basically, this https://github.com/marick/Midje/blob/master/src/midje/data/project_state.clj

@mishok13: thanks a lot.

@danlebrero:I didn't really help you here, did I?

I just hope that maybe someone re-writes autotesting to do a proper thing

@mishok13: you confirmed my suspicion

which is quite helpful

I suspect that *assert* is not being set to false` when building my uberjar. When I start my app from the uberjar, then connect to its nrepl and evaluate *assert*, I get true. I can't afford to run my pre and post conditions in production. How do I ensure that they're off?

I have :profiles {:uberjar {:global-vars {*assert* false}}} in my project.clj

anyone know how to get comments in the interior of a function to get pulled into the documenation section with Marginalia? I’ve tried ; and ;; and they always stay in the code section

@ghadi: any idea of what the future of squee looks like? I really liked the approach and impl.

@ragge thanks. I have my attention turned towards a different library right now (stay tuned) but I'd be glad to merge in some tests

"Everything works for me" but there is no test coverage

The one feature I haven't pushed up yet, is "data readers" for SQL. Rather than receiving a java.util.Date from the underlying resultset, you can receive java.time or Joda -- customizable by datatype

I'm just happy about the connection & transaction implementation. It's just simpler than clojure.java.jdbc

When you say "data readers" for SQL, do you mean something similar to IResultSetReadColumn in java.jdbc?

ragge: essentially, but not globally scoped

@ghadi: ok, makes sense

@ghadi: which scope? per statement?

passed in as an argument a la (clojure.edn/read {:readers})

@ljosa: I observe the same behavior with global-vars on a sample project

seems that lein just ignores assert

@ghadi: would you accept contributions for tests/minor things (found a few docstring errors)?

Is there a contains-in? I.e. (contains-in? {:a {:b 1}} [:a :b]) should be true.

(defn contains-in? [m ks] (not= :not-found (get-in m ks :not-found)))

seriously though, no, I don't think there's anything like that but it should be fairly easy to write one

@ragge: Gladly.

@mbertheau: (comp some? get-in)

^^ doesn't work for (contains-in? {:a {:b nil}} [:a :b])

I have

(fn [m [k & ks]]
  (if (contains? m k)
    (if (nil? ks)
      true
      (recur (k m) ks))
    false))

I like from @mishok13

(defn contains-in? [coll key]
  (not= :not-found (get-in coll key :not-found)))

hmm, just realized that (contains? {:a {:b nil}} [:a :b]) => false

they key [:a :b] exists, just happens that the value is nil

@mbertheau: I would modify it slightly for the case when keys aren't keywords

(fn [m [k & ks]]
  (if (contains? m k)
    (if (nil? ks)
      true
      (recur (get m k) ks))
    false))

bostonaholic: you have a collision on (contains-in? {:a {:b :not-found}} [:a :b]), easily fixed by using a new Object that won't be equal to anything else.

Hi everybody! I'm testing a small service to make dependency graphs for clojure projects. You feed it a github url and it gives you back a dep graph. Anybody wants to try it out? http://asterion-dev.elasticbeanstalk.com/index.html

@bensu: Try #C06MAR553! that channel needs more love

hahaha @dominicm it's not an announcement, I haven't even configured the routes yet

@bensu: In other news, I need to simplify my library: https://i.imgur.com/qb3uA4C.png

@bensu: Nice would be nice to be able to either hover over or click on a node and have the path highlighted

And to make it linkable! 😛

@gjnoonan: which paths? all paths to the node?

@dominicm: we might start with download the svg

@bensu I've wanted something like this before. Nice project

to add to your feature requests, I'd enjoy being able to see the graph at the var level

@xeqi: how do vars depend on each other?

a def/defn creates a var that depends on the var of any referenced symbol in it's source. Almost like a call graph

@xeqi: it's definitely doable, I'll put it on the queue

@bensu: and I'll add another feature request for branches.. ala https://github.com/xeqi/clojars-web/tree/lucene-index-component