/ Ruby on Rails
/
method

reverse_merge!

reverse_merge!(other_hash)
public

No documentation available.

# File activesupport/lib/active_support/core_ext/hash/reverse_merge.rb, line 17
        def reverse_merge!(other_hash)
          replace(reverse_merge(other_hash))
        end

1Note

Documentation

carlosbrando · Jul 22, 20087 thanks

Allows for reverse merging where its the keys in the calling hash that wins over those in the other_hash. This is particularly useful for initializing an incoming option hash with default values:

def setup(options = {})
options.reverse_merge! :size => 25, :velocity => 10
end

The default :size and :velocity is only set if the options passed in doesn‘t already have those keys set.