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# (*SequenceMatcher).Ratio

Defined in github.com/drone/drone/vendor/github.com/pmezard/go-difflib/difflib/difflib.go

## Description

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 if you haven't already computed .GetMatchingBlocks() or .GetOpCodes(), in which case you may want to try .QuickRatio() or .RealQuickRation() first to get an upper bound.