One of the coolest value adds of a thing like babel was that literally anyone and everyone could take an afternoon to understand the plugin system and write an experiment for the language and ship it to anyone and everyone to try out. Because of the design if you wanted to remove yourself from the experimental syntax you'd just compile one last time and overwrite the experimental syntax with the regular raw syntax.
On Mon, Jun 26, 2023 at 2:12 PM Wojtek Mach <woj...@wojtekmach.pl> wrote: > Btw, you may want to check out > https://andrealeopardi.com/posts/a-story-of-regret-and-retiring-a-library-from-hex/ > . > > On 26 Jun 2023, at 21:58, Ben Wilson <benwilson...@gmail.com> wrote: > > Hi, > > This has been proposed before. Someone came up with > https://github.com/meyercm/shorter_maps which accomplishes this as a > macro. It might be worth a discussion again at this point but it is worth > noting that this is a proposal that has been on this list before, and so it > would likely be good to address considerations raised there in this new > proposal. > > - Ben > > On Monday, June 26, 2023 at 3:36:16 PM UTC-4 torres....@gmail.com wrote: > >> Hi, >> I'd like to propose a syntax sugar for maps, specially for pattern >> matching and construction. >> # Map construction >> language = :elixir >> %{ language } >> => %{language: :elixir} >> >> # Map pattern match >> map = %{feature: :pattern_match} >> %{ feature } = map >> => %{feature: :pattern_match} >> feature >> => :pattern_match >> >> case %{ key: "some value" } do >> %{key} -> >> key >> _ -> >> nil >> end >> => "some value" >> >> # Map in function args >> defmodule Foo do >> def bar(%{ key }), >> do: key >> end >> >> Foo.bar(%{ key: "some value" }) >> => "some value" >> >> Of course this would be just a syntax sugar. It won't compromise >> program's performance. >> The advantage of that is mainly when pattern matching function, but also >> *case* and *with* statements, on maps with some considerable amount of >> keys. >> >> with %{ key1 } <- %{key1: "value1"}, >> {:ok, %{key2, key3, key4, key5}} <- >> {:ok, %{key2: "value2", key3: "value3", key4: "value4", key5: "value5"}} >> do >> {key1, key2, key3, key4, key5} >> end >> => {"value1", "value2", "value3", "value4", "value5"} >> >> I'd like to know if more people would be interested on that too. >> > > -- > You received this message because you are subscribed to the Google Groups > "elixir-lang-core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elixir-lang-core+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elixir-lang-core/56ed3f2e-c696-4986-9e34-b31b720d49a9n%40googlegroups.com > <https://groups.google.com/d/msgid/elixir-lang-core/56ed3f2e-c696-4986-9e34-b31b720d49a9n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- > You received this message because you are subscribed to the Google Groups > "elixir-lang-core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elixir-lang-core+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elixir-lang-core/6944AF71-417D-412B-9897-B00C3F0A745A%40wojtekmach.pl > <https://groups.google.com/d/msgid/elixir-lang-core/6944AF71-417D-412B-9897-B00C3F0A745A%40wojtekmach.pl?utm_medium=email&utm_source=footer> > . > -- Kurtis Rainbolt-Greene, Software Developer & Founder of Difference Engineers 202-643-2263 -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/CAMhJPGgZjTQcfX4Hy%2BttQEkHhXPNLsueTNE3ijVjcQb6Rjx-9Q%40mail.gmail.com.
