Onboarding to Elixir

Re:Onboarding to Elixir by ashton314 on Tuesday June 22, 2021 @12:25PM (#27593687)

Exactly! In Elixir, structs are just a special case of a map with a little bit of compile-time field checking magic. At runtime it's all the same. It's so easy to see the shape of things and figure out where stuff came from. Also, `|> IO.inspect(label: "...")` is one of my favorite things ever in getting my head wrapped around a new struct I haven't encountered before.

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Re:Onboarding to Elixir by dnautics on Tuesday June 22, 2021 @02:25PM (#27595262)

if you use vscode, you might like this: https://slickb.it/bits/70

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Re:Onboarding to Elixir by ashton314 on Tuesday June 22, 2021 @03:05PM (#27595760)

Oh that's lovely! I'm an Emacs user, and I've got two yasnippets that do roughly the same thing:

https://gist.github.com/ashton314/f0a90a46e39b103635f2be8d8e...

The second one adds a pipe in front, which is super handy. Yours gives me some ideas though…

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Re:Onboarding to Elixir by bostonvaulter2 on Tuesday June 22, 2021 @03:51PM (#27596324)

Do you know if you can insert the current line number with yasnippet? I have two snippets that look almost identical to yours, although my non-pipe version leaves the cursor at the beginning of the label since I've found that I often want to customize the label because I may be inspecting similar variables at different points in the code.

Ah, figured it out. It's very powerful to be able to call elisp inside snippets. Here's my new Labeled Inspect snippet:

    # -*- mode: snippet -*-
    # name: Labeled Inspect
    # key: lin
    # --
    IO.inspect($1, label: "$2$1 (`(buffer-name)`:`(line-number-at-pos))`")

and a piped version:

    # -*- mode: snippet -*-
    # name: Piped Inspect
    # key: pin
    # --
    |> IO.inspect(label: "$2$1 (`(buffer-name)`:`(line-number-at-pos))`")

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Re:Onboarding to Elixir by ashton314 on Tuesday June 22, 2021 @04:46PM (#27596967)

Excellent! I'm going to have to extend mine. Emacs ftw

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Re:Onboarding to Elixir by bostonvaulter2 on Tuesday June 22, 2021 @03:01PM (#27595703)

Nice snippet! I think that snippets are often underrated by programmers, especially debugging related snippets (the code is temporary so "duplication" doesn't really matter).

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Re:Onboarding to Elixir by dnautics on Tuesday June 22, 2021 @03:03PM (#27595744)

This snippet is my #1 productivity enhancer for elixir. It goes extremely well with multiline cursor. Especially since line numbers are typically the same length so ninjaing out the inspects in a pipeline is usually fast

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Re:Onboarding to Elixir by pablodavila on Tuesday June 22, 2021 @05:05PM (#27597200)

Also, if you have piped functions you can now use `|> tap(&IO.inspect(&1.a))`at any point (requires 1.12).

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