Hello all, why my re-matches is getting StackOverflow?

I have a long string with re-matches it

Are you sure re-matches is stackoverflowing? If you are calling a function in repl there is potentially lots of other code invoked in printing the result for example

the only function I call is re-match and pass the string

well, about Repl I don´t know

is there any way to see jvm options in repl? Maybe seen the configuration about it

I´m using boot instead

Look at the stacktrack trace and see what code is on the stack

1. Unhandled java.lang.StackOverflowError
   (No message)

              Pattern.java: 4660  java.util.regex.Pattern$GroupHead/match
              Pattern.java: 4787  java.util.regex.Pattern$Loop/match
              Pattern.java: 4719  java.util.regex.Pattern$GroupTail/match
              Pattern.java: 4570  java.util.regex.Pattern$BranchConn/match
              Pattern.java: 3779  java.util.regex.Pattern$CharProperty/match
              Pattern.java: 4606  java.util.regex.Pattern$Branch/match
              Pattern.java: 4660  java.util.regex.Pattern$GroupHead/match
              Pattern.java: 4787  java.util.regex.Pattern$Loop/match
...

may be it´s been recursive inside it

not in recur tail mode

if I increase jvm memory

?

No, you need to increase the stacksize

Apparently it is a thing, on a large enough string the Java regex library will stackoverflow with certain regexs.

Do you know how to increase stacksize in boot ?

or other way to do this with regex?

The easiest thing to do might be to preprocess the string, split it in to smaller strings based on some separator(if nothing else splitting by lines), and then regex the smaller strings

Could switching to instaparse and a grammar solve this? I imagine a full parser won’t be limited (as much) by the stack?

@dpsutton I know that instaparse is good for this too, but by regex is simple than that

Well ... in theory :)

I did a parser with instaparser, but it´s much more complex than that 🙂

doing preprocess the string is an option too, I´ve done it, but I have some \r\n in the middle of string that will break the rule for spliting string

and I tried the regex expression in on-line test and it worked, but this problem happen

Can I introduce my own reader conditional features in a library? like that: #?(:mylib/jdk8 old-and-busted-form :mylib/jdk11 new-hotness-form)

you can but there is no way to activate them currently

so basically I can't 😄

probably quite common issue when you start functional programming I’m trying to make my code more testable/functional and I wrote the gist (https://gist.github.com/tdantas/1daa70b780d80e51e86416eb7dcf95ac) to understand how would you guys transform the js imperative code into clojure (testable/idiomatic ) one my first approach was only using functions, my second one will be using protocols for ‘statefull’ components. is that make sense ?

I have a dependency that I wish to integrate with tools.deps, however it's an FTP only distro on a password protected server. Is there any sane way to automatically pull and add this to my classpath?

Not directly, no

If you have the jar locally, you can just use :local/root to refer to it as a dep

would this be a good candidate for clojure.tools.deps.alpha.extensions for a person to extend tools.deps to handle FTP?

willing to consider it

one big thing is we want no creds in deps.edn files

oh i meant for a user to personally extend, not for a patch to tools.deps. it seems open is why i was wondering

it is open with the caveat that there currently is no way to get your code on the classpath when building classpaths

under clj, I mean

if using tools.deps directly, then that's up to you of course

We need a deps.edn for our deps.edn.... :)

Has anyone managed to wrap the java library Redisson in a nice way?

Is there a way to specify exclusions in deps.edn dependencies?

ch.qos.logback/logback-classic {:mvn/version "1.2.3" :exclusions [org.slf4j/slf4j-api]} as an example

cool thanks

you're most welcome 🙂

I have a library which wraps a java library and puts it into a big tree structure. The tree structure itself can be useful to end users for some situations. How do people feel about a library using something like datascript internally and exposing a datascript db of some static data? It feels wrong to me to do that and instead i've just used regular clojure to represent the tree, and have a namespace where i turn the tree into flat maps representing the "queries" i need for easy lookup in a query namespace. This works ok but as a user I keep wanting to use the tree in new ways which either requires repeating a lot of what's in the query namespace, or putting things in the query namespace which aren't used by the library. I feel like I'm slowly implementing a more datascript-like structure anyway.

Anyone ever run an external API on a windows aws machine? Code works locally, but on the windows machine I'm getting the following error:

java.lang.NullPointerException: null
                               core.clj:151 compojure.core/routing[fn]
                              core.clj:2592 clojure.core/some
                              core.clj:2583 clojure.core/some
                               core.clj:151 compojure.core/routing
                               core.clj:148 compojure.core/routing
                            RestFn.java:139 clojure.lang.RestFn.applyTo
                               core.clj:648 clojure.core/apply
                               core.clj:641 clojure.core/apply
                               core.clj:156 compojure.core/routes[fn]

What do mean by works locally?

My wild guess is you are loading a resource as a file (from the filesystem) instead of as a resource (from the classpath), which works locally when the file is present, but when you package up your code and ship it off, you just ship the jar, so the file isn't on the filesystem

That isn't really based on your stacktrace there because the stacktrace is incomplete and it looks like you are using some library that is editing and omitting parts of it as well

That is the exception you would get if one of your handlers was the value nil instead of a ring handler

If I'm writing output to *err* I don't see it during lein test. What should I do to see that?

it works with clj test runner

how are you writing it?

I would expect that to just work, but maybe something like missing flushing when printing or something. I am however increasingly out of date on how stuff works with lein

@hiredman https://github.com/borkdude/naw/blob/32a9cc263b41896ed97eea23059f8fa55d714b0a/src/naw/core.cljc#L34

if you are using pprint, definitely insert a flush afterwards, if youare using multiple threads, I think the lein runner injects a call to shutdown-agents at the end

oh, lein does its own manipulating of clojure.test/report, so who knows if the multimethod you register that method on is even being called

https://github.com/technomancy/leiningen/blob/master/src/leiningen/test.clj#L108-L109

You can tell lein not to monkey-patch clojure.test via some key in project.clj but, yeah, that's probably what's shooting you in the foot there.

ah alright. what's the downside of not letting lein monkey patching ?

breaks retest according to the docs. which I've never ever seen anyone use https://github.com/technomancy/leiningen/blob/master/sample.project.clj#L356

neat idea though

In Python and Javascript, Github has a nice way of alerting you of known security vulnerabilities. Is there anything similar for Clojure? The only way I can think of to look for security patches is to manually read through changelogs of different libraries and decide which ones need to be upgraded.

It looks like Github scans https://cve.mitre.org/ for vulnerabilities in libraries

There are some java tools for this that work for java deps of Clojure

Ah okay, but I’m guessing for the Clojure libraries themselves there’s no centralized place to announce and discover security vulnerabilities I was looking at lein-nvd which looks through jars in the classpath and crosschecks the national vulnerability database

@hiredman If I run lein ring server-headless on my machine I can run a localhost curl and hit the server. When I do the same on the aws windows desktop machine, I get the null point after compojure core routing. Maybe something to do with the fact that it's an aws windows desktop machine?

@hiredman @seancorfield it turned out not to be the monkey-patch issue, but lein test loads all namespaces and I had some defmethods elsewhere (to test if my lib wraps earlier registered defmethods correctly), but I didn't anticipate the loading order of leiningen

so now it works correctly with lein too

load order :face_with_symbols_on_mouth:

aaand found a test without assertions in one of my own projects: https://twitter.com/borkdude/status/1191482400599158785

(is (= foo) bar) is the killer