This discussion comes up from time to time, so I would recommend seeing the
previous discussions. There are many in favor of this feature and many that
do not appreciate the loss in readability.
Although I have almost no reservations against using a shorthand syntax for
matching, I find it too cryptic for creates:
%{name, age} #=> %{name: name, age: age}
And even more for updates:
%{user | name, age} #=> %{user | name: name, age: age}
The choice is in supporting the syntax only for matching but that makes the
feature somewhat inconsistent.
*José Valim*
www.plataformatec.com.br
Skype: jv.ptec
Founder and Director of R&D
On Thu, Jun 1, 2017 at 10:50 AM, FTS <[email protected]> wrote:
> FYI: https://github.com/whatyouhide/short_maps
>
> On Thu, Jun 1, 2017 at 3:04 PM, Sheharyar Naseer <
> [email protected]> wrote:
>
>> Most Elixir devs will agree with me, that when pattern matching on Maps,
>> the variable names are usually the same as the keys:
>>
>> def some_method(%{user: %{id: id, email: email}, action: action, message:
>> message}) do
>> # do something
>> end
>>
>>
>> I propose another way to pattern match Key-Value pairs in Maps, using the
>> variable names alone (Similar to how you destructure objects in ES6
>> <https://gist.github.com/mikaelbr/9900818#file-destructuring-js-L66>):
>>
>> %{ a, b } = %{a: 1, b: 2}
>>
>> and
>>
>> def some_method(%{user: %{ id, email }, action, message}) do
>> # do something
>> end
>>
>> If this makes sense to others, I'm can try doing this and send a PR (if
>> someone can point me in the right direction 😊).
>>
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