서브 패턴
Page 10 - 작은 괄호 안에 파이프로 문자열 or 효과
- Source : Monday Tuesday Friday
- Case 1
- Regular Expression : (on|ues|rida)
- First match: Monday Tuesday Friday
- All matches : Monday Tuesday Friday
- Case 2
- Regular Expression : (Mon|Tues|Fri)day
- First match: Monday Tuesday Friday
- All matches :Monday Tuesday Friday
- Case 3
- Regular Expression : ..(id|esd|nd)ay
- First match: Monday Tuesday Friday
- All matches : Monday Tuesday Friday
- Alternating text can be enclosed in parentheses(괄호) and alternatives separated with |.
