def myfunc(a,b) do
a + b
end
lambda:
myfunc = fn a, b -> a + b end
myfunc.() # this is one way to call a lambda
https://til.hashrocket.com/posts/591fd34323-require-file-outside-of-load-path
Code.require_file "foo.exs", __DIR__
Install pheonix: mix archive.install https://github.com/phoenixframework/archives/raw/master/phoenix_new.ez