[ruby-core:72366] Re: [Ruby trunk - Feature #11747] \"bury\" feature, similar to 'dig' but opposite

[Billy E Brand <bebrand52@gmail.com>]

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Billy E Brand
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> On Dec 17, 2015, at 23:06, Joseph Jones <joeyi5216@gmail.com> wrote:
> 
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> 
>> On December 2, 2015 at 16:36:12 MST, dameyawn@gmail.com wrote:
>> Issue #11747 has been updated by damien sutevski.
>> 
>> 
>> Tsuyoshi Sawada wrote:
>> > > inferred from the what the user is passing (such as a symbol or string for a hash or an integer for an array)
>> > 
>> > I don't think this is a good idea. I think it should rather depend on the class of the receiver.
>> > 
>> > {}.bury(:users, 0, :name, 'Matz') # => {:users => {0 => {:name => "Matz"}}}
>> > [].bury(:users, 0, :name, 'Matz') # => error
>> > {}.bury(0, 1, 2, :foo) # => {0 => {1 => {2 => :foo}}}
>> > [].bury(0, 1, 2, :foo) # => [[nil, [nil, nil, :foo]]]
>> > 
>> > and similar for struct.
>> 
>> I agree. I should clarify that I was assuming the class of the receiver (`data`) was known in my example. The inference I was talking about was that a buried `0` would imply an array position by default instead of a hash key.
>> 
>> 
>> 
>> 
>> ----------------------------------------
>> Feature #11747: "bury" feature, similar to 'dig' but opposite 
>> https://bugs.ruby-lang.org/issues/11747#change-55211
>> 
>> * Author: damien sutevski
>> * Status: Feedback
>> * Priority: Normal
>> * Assignee: Yukihiro Matsumoto
>> ----------------------------------------
>> In Matz's recent Rubyconf talk, he used this example for the new 'dig' feature coming in Ruby 2.3:
>> 
>> ~~~ruby
>> # we want this
>> data[:users][0][:name]
>> 
>> # we can do this w/o nil errors
>> data.dig(:users, 0, :name)
>> ~~~
>> 
>> What I'm proposing is a 'bury' feature that is the opposite of 'dig' in a sense. It inserts a value at an arbitrary depth, for example:
>> 
>> ~~~ruby
>> data.bury(:users, 0, :name, 'Matz')
>> ~~~
>> 
>> This will create a nested hash or an array automatically at each step if it doesn't already exist, and that can be inferred from the what the user is passing (such as a symbol or string for a hash or an integer for an array). It's similar to autovivification but more powerful!
>> 
>> This behavior is very common, at least in my experience, so a dry method built into Ruby would be awesome! 
>> 
>> 
>> 
>> -- 
>> https://bugs.ruby-lang.org/

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