정규 표현식 - 시작

ABCText Text ITexty 

 

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대소문자  I플래그 

 

 

 

G는 글로벌 그러니깐 처음찾는거 1개인가 아니면 전체문서인가 

 

 

 

 

I was fifty years old to-day. Half a century has hurried by since I first lay in my mother's wondering arms. To be sure, I am not old; but I can no longer deceive myself into believing that I am still young. After all, the illusion of youth is a mental habit consciously encouraged to defy and face down the reality of age. If, at twenty, one feels that he has reached man's estate he, nevertheless, tests his strength and abilities, his early successes or failures, by the temporary and fictitious standards of youth. 

 

윗 문장은 

 

 

점을 늘리면 

 

 

 

 

늘릴때마다 자릿수 와일드카드 느낌으로 간다. 

 

 

 

하지만 이렇게 되엇을때 .로 끝나는 문장은 어떻게 표현해야할까면 

 

 

역슬래시로 표현가능하다 \. 일반 문장