June 2014
Intermediate to advanced
536 pages
15h 18m
English
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Chapter 12. File and I/O operations
This chapter covers
- Keyboard input and screen output
- The IO and File classes
- Standard library file facilities, including FileUtils and Pathname
- The StringIO and open-uri library features
As you’ll see once you dive in, Ruby keeps even file and I/O operations object-oriented. Input and output streams, like the standard input stream or, for that matter, any file handle, are objects. Some I/O-related commands are more procedural: puts, for example, or the system method that lets you execute a system command. But puts is only procedural when it’s operating on the standard output stream. When you puts a line to a file, you explicitly send the message “puts” to a File object.
The memory space of a Ruby program ...
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