Basic Ruby Language Elements

Ruby module R103

Exercises, examples and other material relating to training module R103. This topic is presented on public courses Learning to program in Ruby, Ruby Programming

Ruby Programming - training course - A Modern, Object Oriented, Portable Scripting language.

Ruby Programming - A Modern, Object Oriented, Portable Scripting language. This quickly moving course covers the fundamentals of the Ruby language for ...

http://www.wellho.net/course/rpfull.html [course]

Learning to Program in Ruby - training course - A Modern, Object Oriented, Portable Scripting language.

Learning to Program in Ruby - A Modern, Object Oriented, Portable Scripting language. Ruby is very much an object oriented language, and we concentrate ...

http://www.wellho.net/course/rlfull.html [course]

Variety in output - p, print and puts

# print is 'low level', puts # puts adds a \n if needed # p dumps a variable - so quotes it print "Hello Melksham\n" puts "Hello Trowbridge" puts "Hello ...

http://www.wellho.net/resources/ex.php4?item=r103/print.rb [code sample]

Learning to program in Ruby - examples of the programming basics

We so often overlook the basics of programming, and yet they are so fundamental to good code - understanding things like how widely variables can be seen ...

http://www.wellho.net/mouth/2287_Lea ... asics.html [short article]

puts - opposite of chomp in Ruby

In Ruby, the chomp method removes the last character of a string if it's a line separator. The puts method adds a new line character on to the output ...

http://www.wellho.net/mouth/986_puts ... -Ruby.html [short article]

Variable scope - what is it, and how does it Ruby?

Variables have different "scopes" - in other words, a name that is allocated to a piece of computer memory and subsequently used to refer to that memory ...

http://www.wellho.net/mouth/2296_Var ... Ruby-.html [short article]

Comparing floating point numbers - a word of caution and a solution

"Think of a number between 5 and 15. Double it. Add fourteen. Halve it. Take away the number you first thought of. Is the result 7?" We all played games ...

http://www.wellho.net/mouth/2617_Com ... ution.html [short article]

Ruby hasn't re-invented everything - it's taken the good basics from variables through "Bodmas" to statement structure and commenting from best practise elsewhere.

This topic is presented on public courses Learning to program in Ruby, Ruby Programming

Examples from our training material

calc.rb	Some early gotchas!
calcbetter.rb	A simple calculation in Ruby
d2.4	Easier output formatting in double quoted strings
d2.5	Calculations within double quotes
floater	Floating point rounding errors
muck	Common Ruby Pitfalls
print.rb	Variety in output - p, print and puts
rub1	FAILS to continue a line
x01	Constants in Ruby

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

Structure of statements and comments.
Variables and constants.
Operators.
Assignments, calculations, etc.
Integer, float and string formats.
Single and double quotes, here documents, general strings.

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 700 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.