Ruby/Variables Datatypes Operators2

If you don't remember how to open a Ruby Console, let me remind you: Assuming you have installed Instant Rails, click on the black "I" and select Rails Applications -> Open Ruby Console Window Once the console opens type "irb" and then the commands related to numbers and their type above.

Here's how it could look:

To get rid of the error, type instead of puts x.type ,

puts x.class

A string can be define as a group of characters.It is always enclosed between a pair of delimiter, either single quotes or double quotes. Ruby also allows you to define other delimiters you want to use instead of the standard quotes.If you use %q, %Q, %w, %r, %x the character immediately after it will become your new delimiter.

x=%Q this_is_my_new_delimiter

This will make the blank space after %Q the new delimiter.What will be stored in x is this_is_my_new_delimiter If we would've had it like this instead:

x=%Q this is my new delimiter

This is going to return an error.There are so many blank spaces after the first one that the Ruby does not correctly identify the end of the string.