Ruby Issue Tracking System

03/13/2014

12:59 PM Ruby Feature #9635: Map a hash directly to a hash

Ok, what i suggest is not a valid Ruby syntax. It should be
~~~
.hashy_map { |key, value| {key => value} }
~~~
which is hardly sweeter than
~~~
.map { |key, value| [key, value] }.to_h
~~~
and also goes against common pra... lolmaus (Andrey Mikhaylov)

12:42 PM Ruby Feature #9635 (Closed): Map a hash directly to a hash

There should be a way to directly map a hash to a hash.
The current way to do it is not very graceful:
~~~
{foo: 'foo', bar: 'bar'}.map { |key, value| [key.upcase, value.reverse] }.to_h # => { :FOO => 'oof', :BAR => 'rab' }
~... lolmaus (Andrey Mikhaylov)