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#java

1. 01:08 * klf joined #java
2. 01:09 klf List <Integer> numList =Arrays.asList("2383".split("")).stream().map(Integer::parseInt).toList()
3. 01:09 klf parseInt returns a (primitive) int, and not an Integer instance.
4. 01:10 klf why does the above java code works without first turning the returned int into an Integer instance?
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6. 01:24 jreicher klf: What makes you think it's not doing that?
7. 01:26 klf if it does, then it is not apparent to me from that line of code, which is why I come to ask about it.
8. 01:26 jreicher https://docs.oracle.com/javase/tutorial/java/data/autoboxing.html
9. 01:26 javabot jreicher's title: "Autoboxing and Unboxing (The Java™ Tutorials > Learning the Java Language > Numbers and Strings)"
10. 01:26 nevet Autoboxing and Unboxing (The Java™ Tutorials > Learning the Java Language > Numbers and Strings)
11. 01:26 jreicher Maybe you are unaware of this?
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13. 01:38 klf I see.
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15. 02:00 jreicher klf: It's a good question, by the way, because autoboxing in a situation like this is a performance hit.
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45. 15:54 Swayze peformance is only a concern if you're doing millions of requests per second or have some kind of reason to care?
46. 15:56 dreamreal Swayze: what?
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71. 20:41 jbosmans if the main performance concern is the impact of autoboxing, someone's either doing a very good or a very bad job :-)
72. 20:46 Para AutoboxingFactory
73. 20:53 jbosmans loll
74. 20:54 Para Here's something that's kinda insane, Clojure REPL which hooks into a running Spring Boot app, allowing live rewrites of functionality. And it's being driven through Claude, so check the video/terminal recording. https://brdloush.github.io/livewire/
75. 20:54 javabot Para's title: "Livewire — Live nREPL wire into your Spring Boot app"
76. 20:54 nevet Livewire — Live nREPL wire into your Spring Boot app
77. 20:54 Para Mentioning Clojure here feels a bit silly, as it's entirely LLM prompting, but anyhoos.
78. 20:55 Para You can still run Clojure REPL stuff with it of course, but I guess the future is now and I'm the old man.
79. 21:03 jbosmans agree, impressive
80. 21:04 jbosmans don't see myself using it yet on any main projects yet tho, so I'm the old man :)
81. 21:05 jbosmans could be nice to try on a small hobby project in a sandboxed env
82. 21:08 Para FWIW nREPL protocol does support ssh keys and all, so figure out how to enable that over the socket well before deploying... :)
83. 21:10 jbosmans i guess i would only use it in a dev setting anyway
84. 21:11 jbosmans hah it's at the bottom of the page: "Dev only. Not for production. You've been warned."
85. 21:17 jreicher jbosmans: I think I understand why you say that, but I'm not sure it's completely true. I can imagine someone making a mistake with a very large generic list of integers, iterating over them all and modifying them. They might be confused why it takes longer than they expect.
86. 21:24 jbosmans hopefully if it's down to that (or all about that), same someone might look into some dedicated libs for dealing with large primitive collections etc
87. 21:25 jbosmans and i guess value classes might soonish help out too
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