Why We Use Julia, 10 Years Later

Re:Why We Use Julia, 10 Years Later by ponow on Tuesday February 15, 2022 @04:45AM (#30344494)

Can't you just export the struct? Edit: Just tried it and ran into those difficulties. Julia structs appear to be treated as constants, and Revise.jl didn't help (for me).

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Re:Why We Use Julia, 10 Years Later by plafl on Tuesday February 15, 2022 @06:56AM (#30345323)

I don't know why you cannot "overwrite" existing structs but to be fair whatever system you use to program in a stateful manner in the REPL will have some problems.

Just hit this one: after rewriting a function I don't see any change in behavior. Reason: I overwrote the function but the more specialized one was being called.

But there are plenty more. After some time it's just better to nuke the REPL and start clean. That said, I love programming in the REPL.

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Re:Why We Use Julia, 10 Years Later by sundarurfriend on Tuesday February 15, 2022 @12:52PM (#30350059)

> Just hit this one: after rewriting a function I don't see any change in behavior. Reason: I overwrote the function but the more specialized one was being called.

Yeah, I've had this and the struct redefinition problem since the very early days of Julia, that's why I never fully bought into the Revise.jl based development model (it has its good parts, but these are big limitations that should be mentioned more often when recommending it). That's also why I resisted the removal of the `workspace()`-clearing function (like MATLAB's `clear`), since that would be an alternate option for quick and dirty exploration in a lot of cases; though these days the latency problems of exiting to shell and coming back are much less, so it's not as much of an issue.

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Re:Why We Use Julia, 10 Years Later by eigenspace on Tuesday February 15, 2022 @03:00PM (#30351846)

Revise.jl properly handles the deletion of methods. If the person you were replying to were tracking their changes with Revise, it wouldn't have happened.

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Re:Why We Use Julia, 10 Years Later by sundarurfriend on Wednesday February 16, 2022 @02:29AM (#30357262)

Yeah, my comment was confused in a way - I didn't notice they weren't using Revise.jl, but I was also talking about earlier versions of Revise.jl. Around the time that `workspace` function was retired (v0.7/1.0 times), IIRC, Revise.jl did have problems deleting methods, and that made it a big pain point in a language where method dispatch is such a central pattern. So it fell short as a replacement for workspace-deletion function, despite being suggested as one, and that frustrated me. I'm probably holding on to that negative impression for far too long though, by this point; I'll make a more wholehearted attempt at using a Revise-based workflow and see how it feels today.

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Re:Why We Use Julia, 10 Years Later by freemint on Tuesday February 15, 2022 @07:10AM (#30345420)

Yeah that's the problem.

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