Method Ratio

difflib/difflib.go:465–471

Return a measure of the sequences' similarity (float in [0,1]). Where T is the total number of elements in both sequences, and M is the number of matches, this is 2.0*M / T. Note that this is 1 if the sequences are identical, and 0 if they have nothing in common. .Ratio() is expensive to compute i

()

// want to try .QuickRatio() or .RealQuickRation() first to get an
// upper bound.
func (m *SequenceMatcher) Ratio() float64 {
	matches := 0
	for _, m := range m.GetMatchingBlocks() {
		matches += m.Size
	}
	return calculateRatio(matches, len(m.a)+len(m.b))
}

// Return an upper bound on ratio() relatively quickly.
//