module FindSharedLines
Constants
- VERSION
Public Class Methods
join(files)
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# File lib/find_shared_lines.rb, line 31 def self.join(files) reduce(files) { |first_file, file| first_file | file } end
read_file_into_set(file)
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# File lib/find_shared_lines.rb, line 13 def self.read_file_into_set(file) Set.new(read_lines_from(file)) end
read_lines_from(file)
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# File lib/find_shared_lines.rb, line 9 def self.read_lines_from(file) File.open(file).readlines.map(&:chomp) end
reduce(files) { |acc, read_file_into_set(file)| ... }
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# File lib/find_shared_lines.rb, line 17 def self.reduce(files) first_file, *rest = files first_set = read_file_into_set(first_file) rest.reduce(first_set) { |acc, file| yield acc, read_file_into_set(file) } end