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//proc/thread-self/root/opt/alt/ruby33/share/ruby/did_you_mean/levenshtein.rb

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module DidYouMean
  module Levenshtein # :nodoc:
    # This code is based directly on the Text gem implementation
    # Copyright (c) 2006-2013 Paul Battley, Michael Neumann, Tim Fletcher.
    #
    # Returns a value representing the "cost" of transforming str1 into str2
    def distance(str1, str2)
      n = str1.length
      m = str2.length
      return m if n.zero?
      return n if m.zero?

d = (0..m).to_a
      x = nil

# to avoid duplicating an enumerable object, create it outside of the loop
      str2_codepoints = str2.codepoints

str1.each_codepoint.with_index(1) do |char1, i|
        j = 0
        while j < m
          cost = (char1 == str2_codepoints[j]) ? 0 : 1
          x = min3(
            d[j+1] + 1, # insertion
            i + 1,      # deletion
            d[j] + cost # substitution
          )
          d[j] = i
          i = x

j += 1
        end
        d[m] = x
      end

x
    end
    module_function :distance

private

# detects the minimum value out of three arguments. This method is
    # faster than `[a, b, c].min` and puts less GC pressure.
    # See https://github.com/ruby/did_you_mean/pull/1 for a performance
    # benchmark.
    def min3(a, b, c)
      if a < b && a < c
        a
      elsif b < c
        b
      else
        c
      end
    end
    module_function :min3
  end
end

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Name	Size	Perms	Modified	Actions
core_ext DIR	-	drwxr-xr-x	2026-04-30 07:09:17	Edit Download recursive recursive
formatters DIR	-	drwxr-xr-x	2026-04-30 07:09:17	Edit Download recursive recursive
spell_checkers DIR	-	drwxr-xr-x	2026-04-30 07:09:17	Edit Download recursive recursive
experimental.rb	139 B	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
formatter.rb	1.27 KB	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
jaro_winkler.rb	1.79 KB	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
levenshtein.rb	1.34 KB	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
spell_checker.rb	1.27 KB	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
tree_spell_checker.rb	2.81 KB	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
verbose.rb	137 B	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive
version.rb	49 B	lrw-r--r--	2026-04-07 13:52:15	Edit Download recursive recursive

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