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The original was posted on /r/ProgrammerHumor by /u/polytopelover on 2024-05-26 21:23:20+00:00.

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[-] fourwd@programming.dev 18 points 6 months ago

In Elixir, we mark statuses by using a question mark at the end of the variable name. Something like this:

authorized? = user |> get_something() |> ensure_authorized?()

I like this better than the is_ prefix

[-] alexdeathway@programming.dev 9 points 6 months ago* (last edited 6 months ago)

does '?' have type definition in elixir or this is generally agreed design pattern?

[-] Faresh@lemmy.ml 8 points 6 months ago

If it's like Lisp, then ? is just part of the symbol and doesn't have any special syntatic meaning. In different Lisps it's also convention to end predicate names with a ? or with P (p for predicate)

[-] cytokine0724@sh.itjust.works 4 points 6 months ago
[-] FMT99@lemmy.world 2 points 6 months ago

We do this in Ruby all the time, we just prefer methods over variables, usually.

def authorized?
  current_user&.authorized?
end
[-] cytokine0724@sh.itjust.works 2 points 6 months ago

I'm a principal backend engineer routinely writing Ruby for my day job, so I'm familiar, lol. But you can't do it for local variables and that just sucks. Definitely a +1 for Elixir.

this post was submitted on 27 May 2024
717 points (97.9% liked)

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