Literals

Literals

Literals create objects you can use in your program. Literals include:

• Booleans and nil

• Numbers

• Strings

• Symbols

• Arrays

• Hashes

• Ranges

• Regular Expressions

• Procs

Booleans and nil

nil and false are both false values. nil is sometimes used to indicate “no value” or “unknown” but evaluates to false in conditional expressions.

true is a true value. All objects except nil and false evaluate to a true value in conditional expressions.

(There are also the constants TRUE, FALSE and NIL, but the lowercase literal forms are preferred.)

Numbers

You can write integers of