@flyboarder https://github.com/nayafia/lemonade-stand

@danielcompton @jrheard thanks!

@danielcompton thanks for sharing

hello everyone

searching fora some advice to use clojure.spec for web form validation and on-webpage error reporting

form validation is a breeze with clojure.spec, but attaching error messages to the various failed specs is not clear to me

does someone has advices on that?

you’ll need to write a translation layer; spec errors are for system / developer consumption

@robert-stuttaford right. So the trick could be to def specs and use their namespaced keyword as a key in a map of user readable errors

@robert-stuttaford I need to understand which spec helper function to use to get the keywords for the failing specs for a validation check

have a look at the output of explain-data. you should be able to leverage stuff in there to create the messaging behaviour you need

@robert-stuttaford oh, thanks, will do that

@robert-stuttaford thank you

http://clojure.org/guides/spec#_explain

good luck 🙂

thanks 😄

@yogthos Do you have a particular plan for when you'll next release markdown-clj? We're also quite excited for the inhibition feature 🙂

(any blockers, etc.)

I was going to try find some time to fix a few issues, but I could release a version now with the current ones

@yogthos There's no real rush. Any issues in particular that you want fixed for .90?

this is the main outstanding one https://github.com/yogthos/markdown-clj/issues/107

I've noticed that some things don't work multi-line with markdown-clj. Bold/italics is another one.

Do you have any clues at where to start with this issue? I think I know, but confirmation is better than guessing.

Oh, derp. I totally misread the issue. Okay, this should be easier than I expected.

I'll take a look.

unfortunately, I haven’t had any time to dig into it, if you have an idea then I definitely appreciate you taking a look

the parser reads line by line, so any tags that are split between lines will not be parsed

it might make sense to do a bit of preprocessing to aggregate text in paragraphs into a single string before parsing

What’s the best channel to ask about clojure.java.jdbc (cc @seancorfield )?

@dominicm but yeah, let me know if you'd like me to push the current version out, and I can push an update with the fix later

@yogthos I'll ask if it turns out to be too difficult, but I have train time in the evening to work on things like this 🙂. I'd rather get things fixed, I know if I let you release it I won't get round to it nearly as quickly.

Sounds great!

Anyway: http://stackoverflow.com/questions/40022429/transactions-in-clojure-java-jdbc

There is a #sql channel fwiw

You may be interested in the postgresql savepoint feature depending on what you’re looking for out of your nested transactions: https://www.postgresql.org/docs/current/static/sql-savepoint.html

On the topic of clojure/jdbc... I'm doing some research on implementing a system that reads from a stream (eg: like Kafka) and writes to a RDBMS. Currently, I'm constrained to not be able to use the new Kafka Connect, so will need to implement something myself. I have two concerns: 1) how to make the updates efficient: currently I'm thinking of using some kind of windowing to "batch" my update operations, and 2) best way to implement "upsert" functionality in a db-agnostic way. Anyone done anything like this before?

Is there a way to set the frequency at which carmine pub subs poll for a message?

anyone know when the speaker/talk list for the clojure conj is going to be out?

@gary the talk selection emails went out this last tuesday. I suspect they’ll put the speakers up once everyone confirms

@anmonteiro did you get selected?

nope, perhaps next time 🙂

@borkdude Happy to field java.jdbc questions here — but I see you also found the mailing list, which is good for longer / in-depth questions.

@gary Lynn will be posting it soon, still waiting on some responses

excellent

you mean the speakers for conj?

@victord don’t think so

also those initial bindings are only evaluated the first time

It ends up that this 3rd argument wasn't necessary, thx

Is it possible to run a leiningen plugin as a task ends? I'd like to log error stack traces and want to capture stderr when they occur (such as when there's an error in the source code)

Is there any way to get a key from a map in a way that disregards namespace qualifiers? In other words, given

(def foom #:foo {:a 1 :b 2}
(def barm #:bar {:a 10 :b 20}

@nathanmarz thanks immensely for specter, only needed to watch 9 mins of your youtube vid and you just saved me a huge headache already

@naomarik you're welcome!

qq, is the output os calling str on a hash-map valid edn?

@idiomancy

user=> (edn/read-string (str {:foo identity}))

java.lang.RuntimeException: No reader function for tag object

“it depends” 🙂

yeah, I was going to explicitly make the caveat "assuming no nested objects"

but other than that we're good?

user=> (edn/read-string (str {:foo {:bar :baz}}))
{:foo {:bar :baz}}

[i don’t know much about the edn library, there might be other examples of situations where (str a-map) breaks edn/read-string, this is just the only one that’s come to my mind so far]

perhaps also if you’ve got e.g. a java class in there that clojure doesn’t know how to serialize into an edn-parseable format (i just tried java.util.Date and java.util.HashMap, they both work fine)

You should use pr and it's variants to print data to a string

Like pr-str