Ruby | StringScanner unscan function Last Updated : 12 Dec, 2019 Summarize Comments Improve Suggest changes Share Like Article Like Report StringScanner#unscan() : unscan() is a StringScanner class method which set the scan pointer to the previous position Syntax: StringScanner.unscan() Parameter: StringScanner values Return: set the scan pointer to the previous position Example #1 : Ruby # Ruby code for StringScanner.unscan() method # loading StringScanner require 'strscan' # declaring StringScanner c = StringScanner.new("Mon Sep 12 2018 14:39") c.scan(/\w+/) # unscan() method puts "String Scanner unscan form : #{c.unscan()}\n\n" c.scan(/./) # unscan() method puts "String Scanner unscan form : #{c.unscan()}\n\n" Output : String Scanner unscan form : # String Scanner unscan form : # Example #2 : Ruby # Ruby code for StringScanner.unscan() method # loading StringScanner require 'strscan' # declaring StringScanner c = StringScanner.new("h ello geeks") c.scan(/\w+/) # unscan() method puts "String Scanner unscan form : #{c.unscan()}\n\n" c.scan(/./) # unscan() method puts "String Scanner unscan form : #{c.unscan()}\n\n" Output : String Scanner unscan form : # String Scanner unscan form : # Note : The output may vary because of the different Enumerators or pointer value based on you system. Comment More infoAdvertise with us Next Article Ruby | StringScanner terminate function M mayank5326 Follow Improve Article Tags : Ruby Ruby-Methods Ruby String Scanner-class Similar Reads Ruby | StringScanner terminate function StringScanner#terminate() : terminate() is a StringScanner class method which terminates the string pointer. Syntax: StringScanner.terminate() Parameter: StringScanner values Return: terminates the string pointer. Example #1 : Ruby # Ruby code for StringScanner.terminate() method # loading StringSca 1 min read Ruby | StringScanner pos= function StringScanner#pos=() : pos=() is a StringScanner class method which sets the byte position of the scan pointer. Syntax: StringScanner.pos=() Parameter: StringScanner values Return: sets the byte position of the scan pointer. Example #1 : Ruby # Ruby code for StringScanner.pos=() method # loading Str 1 min read Ruby | StringScanner pos function StringScanner#pos() : pos() is a StringScanner class method which returns the byte position of the scan pointer Syntax: StringScanner.pos() Parameter: StringScanner values Return: the byte position of the scan pointer Example #1 : Ruby # Ruby code for StringScanner.pos() method # loading StringScann 1 min read Ruby | StringScanner scan_until function StringScanner#scan_until() : scan_until() is a StringScanner class method which scans the string until the pattern is matched Syntax: StringScanner.scan_until() Parameter: StringScanner values Return: the substring up to and including the end of the match Example #1 : Ruby # Ruby code for StringScan 1 min read Ruby | StringScanner skip_until function StringScanner#skip_until() : skip_until() is a StringScanner class method which returns the number of bytes advanced, or nil if no match was found. Syntax: StringScanner.skip_until() Parameter: StringScanner values pattern Return: the number of bytes advanced, or nil if no match was found. Example # 1 min read Ruby | StringScanner eos? function StringScanner#eos?() : eos?() is a StringScanner class method which checks whether the scan pointer is at the end of the string. Syntax: StringScanner.eos?() Parameter: StringScanner values Return: true if the scan pointer is at the end of the string otherwise return false Example #1 : Ruby # Ruby c 1 min read Like