ascend() public

Iterates over and yields a new Pathname object for each element in the given path in ascending order. 

 Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
    #<Pathname:/path/to/some/file.rb>
    #<Pathname:/path/to/some>
    #<Pathname:/path/to>
    #<Pathname:/path>
    #<Pathname:/>

 Pathname.new('path/to/some/file.rb').ascend {|v| p v}
    #<Pathname:path/to/some/file.rb>
    #<Pathname:path/to/some>
    #<Pathname:path/to>
    #<Pathname:path>

It doesn’t access actual filesystem.

This method is available since 1.8.5.

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