Ruby implementing access to members of collection by [] -


is there way implement access member of collection []. mean have program linked list , wanna access members coll[int]. there way that?

is linked list own class? if so, can define [] method class:

class linkedlist    ...    def [](int index)     node = @head     index.times       node = node.next     end     node   end  end

this code presumes member variable @head references first entry in list, , method #next returns next entry in list. assumes zero-based indexing, , has no error handling index being out of range.

in use, call way want:

linked_list[2]

ruby treats though had written:

linked_list.[](2)

these 2 syntaxes equivalent, 1 writes first, shorter form.


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