Ruby StringScanner.get_byte用法及代码示例

扫描一个字节并返回它。此方法对多字节字符不敏感。另请参阅： 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