Every operation has a result. Easy - store it to
a varibale. But operations have side effects too that
you can read from special variables. And the very act
of running your script provides a wide variety of extra
information that you may want to use ... and is there,
if you know where, for the asking.
This topic is presented on public course
Ruby Programming
Examples from our training material
| cc | begin block |
| gloop1 | Topicalisation - before |
| gloop2 | Topicalisation - after |
| pgv.rb | predefined global variables and resources |
| ruby_awk.rb | implicit loop around code - awk mode |
| topic.rb | Topicalisation - the use of $_ |
| vvx | variable types |
Background information
Some modules are
available for download as a sample of our material or under an
Open Training Notes License for free download from
http://www.training-notes.co.uk.
Topics covered in this module
ARGV, $0 and friends - the command line.
Other special variables from $: through $$ to $<.
Environment variables.
Pseudo-variables.
Reserved words in Ruby.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our
Listing and schedule page.
Well House Consultants specialise in training courses in
Python,
Perl,
PHP, and
MySQL. We run
Private Courses throughout the UK (and beyond for longer courses), and
Public Courses at our training centre in Melksham, Wiltshire, England.
It's surprisingly cost effective to come on our public courses -
even if
you live in a different
country or continent to us.
We have a technical library of over 600 books on the subjects on which we teach.
These books are available for reference at our training centre. Also
available is the Opentalk
Forum for discussion of technical questions.