BottomlessHash

firedev.com/2015/bottomless-ruby-hash firedev.com/posts/2015/making-bottomless-hash-ruby-gem

BottomlessHash is a subclass or Ruby Hash that allows you to blindly assign values without raising errors on missing keys. So you can do chained assings and accessing keys without checking or using .try.try.try....

params = BottomlessHash.new
params[:world][:thailand][:bangkok][:bangna]

params
=> {:world=>{:thailand=>{:bangkok=>{:bangna=>{}}}}}

params[:missing][:key]
=> {} # no error raised

Caveat

It returns an empty hash instead of nil if there is no value. Keep that in mind:

BottomlessHash.new[:missing][:key]
=> {}

Hash.bottomless

It also adds #bottomless method to Ruby Hash Class so now you can have as save version of your hash:

yaml.bottomless[:see][:if][:there][:is][:a][:value][:here]
=> {} # apparently there is not

Installation

Add this line to your application's Gemfile:

gem 'bottomless_hash'

And then execute:

$ bundle

Or install it yourself as:

$ gem install bottomless_hash

License

The gem is available as open source under the terms of the MIT License.

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