refinement.rb
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refinement.rb
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module StringExt↵
refine String do↵
def words↵
scan(/\w+/).map(&:downcase)↵
end↵
def similarity(other)↵
a, b = words, other.words↵
(a & b).size.to_f / (a | b).size↵
end↵
end↵
end↵
using StringExt↵
"hello world".similarity("world")
0WPM•0%•0:00•0/247(0%)|Ln 1, Col 1
UTF-8•Ruby