lib/text_rank/char_filter/lowercase.rb
module TextRank
module CharFilter
##
# Character filter to force text to lowercase
#
# = Example
#
# Lowercase.new.filter!("What a pessimist you are! - Candide")
# => "what a pessimist you are! - candide"
##
class Lowercase
# Perform the filter
# @param text [String]
# @return [String]
def filter!(text)
text.downcase!
end
end
end
end