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Articles authored by Elixir School contributors and members of the community.
TIL about IO.inspect/2‘s :label opt
IO.inspect/2
:label
Did you know you could label your output? Neither did we! Check out today’s TIL to learn more.
Sean Callan
TIL about ExUnit’s capture_log option
Capture the output from Logger to clean up your test runs
Alex Griffith
TIL How to Run Tests for One Child App in an Umbrella
Run all of the tests, or just a specific tests, for a given child app in an umbrella application with this handy command.
Sophie DeBenedetto
TIL How to Run Ecto Migrations on Production
What to do when you can’t use mix ecto.migrate
mix ecto.migrate
Kate Travers
TIL about Process.send_after/4
Process.send_after/4
Want to schedule something to run later? Need a reoccurring task? Today we learn how!
TIL GenServer’s handle_continue/2
handle_continue/2
Support non-blocking, async GenServer initialization callbacks with OTP 21’s nifty handle_continue/2!
Walk-Through of Phoenix LiveView
Learn how to use Phoenix LiveView for real-time features without complicated JS frameworks.
TIL Ecto Constraints and Validations
Let’s take a look at how Ecto handles these two ways of ensuring data integrity
Prince Wilson
TIL Using Erlang Ports
Use Ports and GenServers to communicate from your Elixir app to processes running outside the Erlang VM.
TIL How to Select Merge with Ecto.Query
Before you reach for adding another association to your schema, consider using Ecto.Query#select_merge/3 with a virtual field instead.
Ecto.Query#select_merge/3
