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thbar/reloading.exs

Created October 29, 2016 11:32
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Live code reloading with Elixir
Raw
reloading.exs
# mix run --no-halt reloading.exs
# in music.exs, put:
#
# defmodule Music do
# def version do
# "3"
# end
# end
#
# then tweak it and save, Music will be reloaded dynamically
Code.compiler_options(ignore_module_conflict: true)
defmodule Monitor do
# relies on https://github.com/falood/exfswatch/pull/9 for --latency support
use ExFSWatch, dirs: ["music.exs"], listener_extra_args: "--latency=0.0"
def callback(_file_path, _events) do
Code.eval_file("music.exs")
IO.inspect Music.version
end
end
Monitor.start
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