Created
December 2, 2010 06:45
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nest merge hashes
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h1 = {:key => {a: 1, b: 2, c: {a: 1, b: 2}}} | |
h2 = {:key => {c: {a:'a', c: 'c'}, d: 4}} | |
recursive_merge = lambda do |k, old, new| | |
(new.respond_to?(:merge) && old.respond_to?(:merge)) ? new.merge(old, &recursive_merge) : new | |
end | |
puts h1.merge(h2, &recursive_merge) | |
# => {:key=>{:a=>1, :b=>2, :c=>{:a=>"a", :b=>2, :c=>"c"}, :d=>4}} |
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Y combinator! I'll try after sleeping some :)