The Different Modes of Opening a File : Open a File « File Directory « Ruby






  1. Ruby
  2. File Directory
  3. Open a File

The Different Modes of Opening a File



MODES        WHAT IT IMPLIES

r            Read-only mode. 
             The file pointer is placed at the beginning of the file. 
             This is the default mode.

r+           Read-write mode. The file pointer will be at the beginning of the file.

w            Write-only mode. 
             Overwrites the file if the file exists. 
             If the file does not exist, creates a new file for writing.

w+           Read-write mode. 
             Overwrites the existing file if the file exists. 
             If the file does not exist, creates a new file for reading and writing.

a            Write-only mode. 
             The file pointer is at the end of the file if the file exists. 
             That is, the file is in the append mode. 
             If the file does not exist, it creates a new file for writing.

a+           Read and write mode. 
             The file pointer is at the end of the file if the file exists. 
             The file opens in the append mode. 
             If the file does not exist, it creates a new file for reading and writing.








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1.opens up your text.txt file:
2.The second parameter "r" defines that you're opening the file for reading.
3.Open a file in a mode where it can be read from and written to at the same time
4.open file block
5.Read UTF-8 text
6.Write UTF-8 text
7.Latin-1 transcoded to UTF-8 in File.open
8.Open a file for reading binary data