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unless String.method_defined? :remove_prefix
class String
# Removes a prefix in a string.
#
# @return [String] a new string without the prefix.
#
# @example
# 'Ladies Night'.remove_prefix('Ladies ') #=> 'Night'
def remove_prefix(pattern)
dup.remove_prefix!(pattern)
end
# Removes a prefix in a string.
#
# @return [String] the string without the prefix.
#
# @example
# 'Ladies Night'.remove_prefix!('Ladies ') #=> 'Night'
def remove_prefix!(pattern)
gsub!(/\A#{pattern}/, '')
end
end
end
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