joey_the_snake
I have 2 modules, one of them has a function that returns a list and the other one is using that function to create a module attribute.
Is this a safe operation in Elixir? I’m not sure if it’s guaranteed that the first module will be compiled before the second one. Also, does it matter if the modules are in the same file/different files?
e.g:
defmodule Producer do
def special_list do
[1,2,3]
end
end
defmodule Consumer do
@special_attribute Producer.special_list()
end
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Deploy Phoenix to your own VPS with PaaS ease: push-to-deploy, zero downtime, auto SSL, managed Postgres. 14-day free trial at potions.io
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #channels
- #elixirconf
- #exunit
- #discussion
- #code-sync
- #javascript
- #podcasts
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #blog-post
- #ai
- #phoenix_html
- #iex
- #elixirconf-us
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #hex
- #security
- #metaprogramming
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Bringing learning, work and compliance together since 1987.
Producing high quality Elixir screencasts since 2017.
Enabling companies to succeed by building software people love.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 3- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
kip
Welcome to the forum!
The compiler will detect that you are calling a remote function on the Producer module and will compile the Producer module if it needs to. So yes, it’s a safe thing to do and quite a common pattern.
joey_the_snake
Thanks very much!
szajbus
Calling a function from another module at compile-time creates a compile-time dependency to that module.
If a
Produceralso had compile-time dependency toConsumer(direct or indirect), compiler would run in a deadlock.So, it’s possible, but beware