つまり、UTF-8の1バイト目になり得る文字は0x00-0x7Fおよび0xC2-0xF0,0xF3の176文字、なり得ない文字は残りの80文字。 Register as a new user and use Qiita more conveniently You get articles that match your needsYou can efficiently read back useful informationYou can use dark themeWhat you can do with signing up