[elixir! #0078] The process of elixir version upgrade (1.11 -> 1.12)

I want to open github as usual and found that my favorite programming language elixir has released a new version. I downloaded and installed it immediately. I didn't expect a bunch of errors when I ran the company's project.

1

The first thing to see is:

warning: ^^^ is deprecated. It is typically used as xor but it has the wrong precedence, use Bitwise.bxor/2 instead

Checked the Changelog, it turns out that this function has been eliminated, just change it Bitwise.bxor/2

2

Then elixir 1.12 version fixes a bug about behavior. Previously, if the implementation function of a callback was not marked @impl true , there would be no warning. Will report now:

warning: module attribute @impl was not set for function xxx/2 callback (specified in XXX). This either means you forgot to add the "@impl true" annotation before the definition or that you are accidentally overriding this callback

We just add @impl true the corresponding function.

3

The last is the change of format. In version 1.12, it is no longer allowed to include newlines in string escapes, for example

"abc#{
d
}e"

It is qualified in the old version, but in the new version it will be forced to format as:

"abc#{d}e"

end

In this way, a pleasant upgrade is complete.