Feature #10444 » implement_matrix.rb.patch
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# * Vector.basis(size: n, index: k)
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#
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# To access elements:
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# * #[](i)
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# * #[](arg)
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#
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# To enumerate the elements:
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# * #each2(v)
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| ... | ... | |
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# ACCESSING
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#
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# Returns element number +i+ (starting at zero) of the vector.
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# :call-seq:
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# vector[index] -> obj or nil
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# vector[range] -> new_vector or nil
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#
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# Element Assignment — the element at index or
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# replaces a new vector specified by the range of indices.
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#
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# Vector[1, 2, 3][1]
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# => 2
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#
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# Vector[1, 2, 3][1..-1]
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# => Vector[2, 3]
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#
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# Like Array#[], Negative indices will count backward from the end of the vector.
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#
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def [](i)
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@elements[i]
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def [](arg)
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return unless elements = @elements[arg]
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arg.is_a?(Range) ? Vector[*elements] : elements
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end
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alias element []
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alias component []
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