this post was submitted on 27 May 2024
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new preference war just dropped (i.redd.it)
submitted 5 months ago by gandalf_der_12te@discuss.tchncs.de to c/programmer_humor@programming.dev
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geteilt von: https://lemmit.online/post/3018791

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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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[–] alexdeathway@programming.dev 201 points 5 months ago* (last edited 5 months ago) (3 children)

First one are method name, second one are status name.


def open_file_dialog(self):
       self.dialog_file_open = True
       pass

Yoda level preference war.

[–] Croquette@sh.itjust.works 101 points 5 months ago (2 children)

I tend to add is to booleans toreally differentiate between a method name and a status.

def open_file_dialog(self):
    self.dialog_file_is_open = True
    pass

That way, it's easier for my dumb brain to spot which is which at a glance.

[–] db0@lemmy.dbzer0.com 114 points 5 months ago (1 children)

is_dialog_file_open

fite me

[–] TheSlad@sh.itjust.works 58 points 5 months ago (1 children)

No fiting. IS always goes at the start of names for booleans you are correct

[–] sus@programming.dev 2 points 5 months ago* (last edited 5 months ago) (2 children)

that works for 2 word names eg is_open or is_file, but in this case is_dialog_file_open is structured like a question, while dialog_file_is_open is structured like a statement

[–] Rinox@feddit.it 8 points 5 months ago

Doesn't matter, the point is that, if it starts with "is" then you automatically know it's a boolean.

[–] red@sopuli.xyz 3 points 5 months ago

It still works. is_this_thing_some_thingy. Is is just a prefix for if the suffix returns true/false.

[–] fourwd@programming.dev 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

[–] alexdeathway@programming.dev 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?

[–] Faresh@lemmy.ml 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)

[–] cytokine0724@sh.itjust.works 4 points 5 months ago (1 children)

jealously weeps in ruby

[–] FMT99@lemmy.world 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
[–] cytokine0724@sh.itjust.works 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.

[–] Yondoza@sh.itjust.works 25 points 5 months ago* (last edited 5 months ago)

This is the way.

Command statement = an action

Question statement = a status

[–] crispy_kilt@feddit.de 5 points 5 months ago

Lol mutable state