Example: Basic Output in Ruby
puts "Hello World!";
Output:
Hello World!
Example: Basic Output in Ruby
print <<EOF
This is a paragraph of text
spanning multiple lines.
EOF
Output:
This is a paragraph of text < spanning multiple lines.
Reserved Words
The following are reserved words in Ruby
- BEGIN
- END
- alias
- and
- begin
- break
- case
- class
- def
- defined?
- do
- else
- elsif
- end
- ensure
- false
- for
- if
- in
- module
- next
- nil
- not
- or
- redo
- rescue
- retry
- return
- self
- super
- then
- true
- undef
- unless
- until
- when
- while
- __FILE__
- __LINE__
Example: BEGIN command
The BEGIN command declares code that is called and run at the outset.
puts "Main Program"
BEGIN {
puts "Initialization code - runs first."
}
Output:
Initialization code - runs first.
Main Program
Example: END command and comments/remarks in Ruby
The END command declares code that is called and run at the end of the program.
puts "Main Program"
END {
puts "Run this at the end."
}
Output:
Main Program
Run this at the end.