What's new in Elixir - Dec/17

Gives me 404
It’s the trailing / on the link

The link works fine here. Maybe it is something related to the CDN? Please try again soon!

Working fine here too

Well done @doomspork - I am sure people are going to look forward to these updates

In the last bullet, I believe “Steam” should be “Stream.”

@josevalim: Link url in HTML code on this page:

<a href="github.com/whatyouhide/stream_data">stream_data library</a>

Is interpreted in my browser as:

https://elixir-lang.org/blog/2017/12/05/whats-new-in-elixir/github.com/whatyouhide/stream_data

My browser: Vivaldi 1.14.1030.3 (latest snapshot) 64-bit

Where could I submit a bug and PR?

Elixir is one of projects that I’m always waiting for next version.

Disagreements about formatting are a thing of the past!

They aren’t as we still have the choice to not use the formatter.

I keep my stance, that shuffling comments (eg. comments on struct fields) and removing trailing commas is a bad idea. Also I’m not a friend of the uniform gap of a single line between different clauses of the same function and totally different functions.

Stream data and property testing will be joining Elixir core in a future release.

I’m looking forward into this!

I think it’s implied that this is only when actually using the formatter.

Same here. I much prefer writing code like this:

defmodule X do
  def a(param1, param2 \\ nil)
  def a(param1, nil), do: ...
  def a(param2, param2), do: ...

  def b(whatever), do: ...
end

When scanning the code, this gives me an immediate clue that these 3 functions above are function header and two pattern-matched variants.

As @ericmj said, we’re not mandated to use the formatter of course, but I’d still expect the above to be the default.

Great that the dynamic supervisor sneaked in there. I was trying to implement one a month or so ago, and happened on the discussion on the Elixir repo from a year or so ago when the idea was floated, just assumed it had come to nothing and been shelved, it’ll be really useful to have that out of the box.

I have fixed it. But a PR is definitely appreciated in the future, the repo is at GitHub - elixir-lang/elixir-lang.github.com: Website for Elixir · GitHub.

Please open up an issue about the comment shuffling on struct fields, I don’t believe this particular behaviour is desired. The other complaints had their pros and cons discussed elsewhere, so I won’t rehash them there.

Ironically the code you wrote would be kept as is by the formatter. The issue is with do/end blocks which is where most disagree in regards to the placement of newlines (and the formatter chose to add a newline before and after the block).