November 2013
Intermediate to advanced
224 pages
6h 9m
English
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Using the Standard Output and Error Streams Appropriately
In addition to the ability to return a single value to the calling program, all programs have the ability to provide output. The puts method is the primary way of creating output that we’ve seen thus far. We’ve used it to send messages to the terminal. A command line’s output mechanism is actually more sophisticated than this; it’s possible to send output to either of two standard output streams.
By convention, the default stream is called the standard output and is intended to receive whatever normal output comes out of your program. This is where puts sends its argument and where, for example, mysqldump sends the SQL statements that make up the database backup.[31]
The second output ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.