Thanks Sam, added! 
AstonJ
nikfp
I love using mix hex.docs and often need them offline. So I set up a helper to fetch project docs for any dependencies as follows:
in ~/elixir_utils/docs_loader.exs I put this little code block in:
defmodule OfflineSetupUtils do
def run_mix_task(args, opts \\ []) do
IO.puts("Running Mix Command: mix #{Enum.join(args, " ")}")
{output, exit_status} = System.cmd("mix", args, opts)
IO.puts(output)
IO.puts("Finished mix task with exit code #{exit_status}\n\n")
end
end
Mix.Project.config()
|> Keyword.get(:deps)
|> Enum.map(fn dep ->
Tuple.to_list(dep)
|> List.first()
|> Atom.to_string()
end)
|> Enum.each(fn name ->
OfflineSetupUtils.run_mix_task(["hex.docs", "fetch", name])
end)
then when I’m in a mix project directory, run iex -S mix to get an iex session scoped to the mix project, then run Code.eval_file(System.user_home!() <> “/elixir_utils/docs_loader.exs”), and watch it pull all the docs at the correct versions for me.
7
christhekeele
This is nicer than my own nasty bash version I hacked together a while back! 
Stealing it, rest in peace ~/bin/airplane_mode.sh
4
Doerge
Good tips here already!
Here are 2 from me:
- Mise for managing binary versions https://mise.jdx.dev/ Similar to asdf (and mostly compat) but faster.
.tool-versionsare compatible. Super useful if you are working on multiple projects with different versions of Elixir (or Python, or Node, etc). - Aerospace for a nice tiling window manager for OS X GitHub - nikitabobko/AeroSpace: AeroSpace is an i3-like tiling window manager for macOS · GitHub
2
Awlexus
Sometimes I want to look at the debug logs of tests, to get a better idea of what might be the issue, so I update my test configs like this and use LOG_LEVEL=debug mix test
- config :logger, level: :warning
+ config :logger, level: System.get_env("LOG_LEVEL", "warning") |> String.to_atom()
3
LostKobrakai
wmnnd
It’s common for Phoenix context functions to take a URL generator function. To test them better, you can use Agents:
test "verify something from a token", %{conn: conn} do
{:ok, agent_pid} = Agent.start_link(fn -> nil end)
capture_token = fn token ->
Agent.update(agent_pid, fn _ -> token end)
end
MyApp.SomeContext.send_verification_email(&capture_token.(&1))
token = Agent.get(token_agent, & &1)
assert something(token)
end
1
adamu
You can use various commands for navigating around in iex (M in the docs is Esc).
I think CTRL+r (search history), CTRL+a (start of line), CTRL+e (end of line), ESC+b (start of word), ESC+f (end of word), ESC+d (delete to end of word) are particularly useful.
edit: also ESC+c is great if you want to get out of the middle of an input:
iex(1)> "part of a string
...(1)> # <-- ESC+c here
iex(1)> Enum.map([], fn ->
...(1)> # <-- ESC+c here
iex(1)> :hi
:hi
6
codeanpeace
Handy way to pipe a result from within IEx to your macOS system clipboard when you have pbcopy installed and shell history enabled
defmodule Helpers do
# pipe expression result to clipboard e.g. ... |> Helpers.copy
def copy(term) do
text =
if is_binary(term) do
term
else
inspect(term, limit: :infinity, pretty: true)
end
port = Port.open({:spawn, "pbcopy"}, [])
true = Port.command(port, text)
true = Port.close(port)
IO.inspect(term, label: "copied to clipboard")
IEx.dont_display_result()
end
end
9
