Programmer Humor

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new preference war just dropped (i.redd.it)

submitted 5 months ago by [email protected] to c/[email protected]

98 comments fedilink hide all child comments

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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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[–] [email protected] 18 points 5 months ago (2 children)

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

[–] [email protected] 9 points 5 months ago* (last edited 5 months ago) (1 children)

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

[–] [email protected] 8 points 5 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)

[–] [email protected] 4 points 5 months ago (1 children)

jealously weeps in ruby

[–] [email protected] 2 points 5 months ago (1 children)

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

def authorized?
  current_user&.authorized?
end

[–] [email protected] 2 points 5 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.