Debugging with IEx.pry/0 is quite simple.
require IEx in your module
Find the line of code you want to inspect
Add IEx.pry after the line
Now start your project (e.g. iex -S mix).
When the line with IEx.pry/0 is reached the program will stop and you have the chance to inspect. It is like a ...
It is possible to use IO.inspect/1 as a tool to debug an elixir program.
defmodule MyModule do
def myfunction(argument_1, argument_2) do
IO.inspect(argument_1)
IO.inspect(argument_2)
end
end
It will print out argument_1 and argument_2 to the console. Since IO.inspect/1 returns i...
defmodule Demo do
def foo do
1..10
|> Enum.map(&(&1 * &1)) |> p
|> Enum.filter(&rem(&1, 2) == 0) |> p
|> Enum.take(3) |> p
end
defp p(e) do
require Logger
Logger.debug inspect e, limit: :infinity...
defmodule Demo do
def foo do
1..10
|> Enum.map(&(&1 * &1))
|> Enum.filter(&rem(&1, 2) == 0) |> pry
|> Enum.take(3)
end
defp pry(e) do
require IEx
IEx.pry
e
end
end
iex(1)> Demo.foo
Request to pry #PID<0.117...
