See Ehelper.App.get_app/1.

Get current dbg backend

iex --dbg pry config :elixir, :dbg_callback, {MyMod, :debug_fun, [:stdio]} Application.put_env(:elixir, :dbg_callback, {Macro, :dbg, []}) if config.pry do Application.put_env(:elixir, :dbg_callback, {IEx.Pry, :dbg, []}) end

Test by by dbg with pry

• $> iex -S mix

• iex> break! H, :dbg_demo, 0

• iex> H.dbg_demo # n to next

• iex> break! URI, :parse, 1

• iex> break! URI, :parse, 1

or break! URI.parse/1 or break! URI.parse("https" <> , )

• iex> H.dbg_demo Break reached: URI.parse/1 (/home/runner/work/elixir/elixir/lib/elixir/lib/uri.ex:792)

Hi test

Ping-pong test

try dbg pry

iex -S mix test test/lab/func_test.exs:5 --trace

debugging

• https://hexdocs.pm/elixir/debugging.html dbg opts
• https://hexdocs.pm/elixir/Inspect.Opts.html#t:new_opt/0

#iex> 123 |> dbg(base: :binary) #iex> # 123 #=> 0b1111011