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rubyrecursionnestedtraversal

Ruby dot notation to nested hash keys

What's the best way of converting a dot notation path (or even an array of strings) into a nested hash key-value? Ex: I need to convert 'foo.bar.baz' equal to 'qux' like this:

{
    'foo' => {
        'bar' => {
            'baz' => 'qux'
        }
    }
}

I've done this in PHP, but I managed that by creating a key in the array and then setting a tmp variable to that array key's value by reference so any changes would also take place in the array.

Solution

  • Try this

    f = "root/sub-1/sub-2/file"   
f.split("/").reverse.inject{|a,n| {n=>a}} #=>{"root"=>{"sub-1"=>{"sub-2"=>"file"}}}