delete_namespace(namespace="xmlns") public

Removes a namespace from this node. This only works if the namespace is actually declared in this node. If no argument is passed, deletes the default namespace.

Evaluates to: this element

 doc = Document.new "<a xmlns:foo='bar' xmlns='twiddle'/>"
 puts doc     # -> <a xmlns:foo='bar'/>
 doc.root.delete_namespace 'foo'
 puts doc     # -> <a/>
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