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自由的力量，自由的生活。
line = "abc"if line =~ /Perl|Python/ ##匹配正則表達式 puts "Scripting language mentioned: #{line}" end line.sub(/Perl/, 'Ruby') # replace first 'Perl' with 'Ruby' line.gsub(/Python/, 'Ruby') # replace every 'Python' with 'Ruby'
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