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.
Methods
Public Instance methods
This method is also aliased as
reverse_update
[ show source ]
# File vendor/rails/activesupport/lib/active_support/core_ext/hash/reverse_merge.rb, line 13 13: def reverse_merge(other_hash) 14: other_hash.merge(self) 15: end
[ show source ]
# File vendor/rails/activesupport/lib/active_support/core_ext/hash/reverse_merge.rb, line 17 17: def reverse_merge!(other_hash) 18: replace(reverse_merge(other_hash)) 19: end
Alias for reverse_merge