[ruby] Ruby File.open 모드 및 옵션은 무엇입니까?

Program / 글쓴이

루비 File.open는 모드와 옵션을 인수로 사용합니다. 전체 모드 및 옵션 목록은 어디서 찾을 수 있습니까?

답변

에서 루비 IO 모듈 문서 , 나는 가정한다.

Mode |  Meaning
-----+--------------------------------------------------------
"r"  |  Read-only, starts at beginning of file  (default mode).
-----+--------------------------------------------------------
"r+" |  Read-write, starts at beginning of file.
-----+--------------------------------------------------------
"w"  |  Write-only, truncates existing file
     |  to zero length or creates a new file for writing.
-----+--------------------------------------------------------
"w+" |  Read-write, truncates existing file to zero length
     |  or creates a new file for reading and writing.
-----+--------------------------------------------------------
"a"  |  Write-only, starts at end of file if file exists,
     |  otherwise creates a new file for writing.
-----+--------------------------------------------------------
"a+" |  Read-write, starts at end of file if file exists,
     |  otherwise creates a new file for reading and
     |  writing.
-----+--------------------------------------------------------
"b"  |  Binary file mode (may appear with
     |  any of the key letters listed above).
     |  Suppresses EOL <-> CRLF conversion on Windows. And
     |  sets external encoding to ASCII-8BIT unless explicitly
     |  specified.
-----+--------------------------------------------------------
"t"  |  Text file mode (may appear with
     |  any of the key letters listed above except "b").

답변

opt루비 1.9의 새로운 기능입니다. 다양한 옵션은 www.ruby-doc.org/core/IO.html에 설명되어 있습니다 IO.new.

답변