Ruby StringScanner.get_byte用法及代碼示例

掃描一個字節並返回它。此方法對多字節字符不敏感。另請參閱： getch 。

s = StringScanner.new('ab')
s.get_byte         # => "a"
s.get_byte         # => "b"
s.get_byte         # => nil

s = StringScanner.new("\244\242".force_encoding("euc-jp"))
s.get_byte         # => "\xA4"
s.get_byte         # => "\xA2"
s.get_byte         # => nil