July 2010
Intermediate to advanced
588 pages
13h 25m
English
Content preview from Tcl 8.5 Network ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Storing raw Tcl values
In some cases, you may decide not to use any additional packages, yet you will need to save some data for future usage. In Tcl, it is easy to store data structures like lists or dictionaries in flat text file.
First, let's demonstrate how to write to and read from a list:
set book1 [list {Learning Nagios 3.0} 978-1-847195-18-0]
set book2 [list {Tcl Network Programming} 978-1-849510-96-7]
set books [list $book1 $book2]
puts [lindex [lindex $books end] 0]
set channel [open data.txt w]
puts $channel $books
close $channel
set channel [open data.txt r]
set books [read $channel]
close $channel
puts [lindex [lindex $books end] 0]
books variable is a list of two lists, each one containing the title and ISBN number, respectively. ...
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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.