Booleans

Type

>: 1<2;

into Hope. Hope replies:

>> true : bool

This means the value of 1<2 is true and the type of 1<2 is bool which is short for boolean.

Now try:

>: 1>2;

Hope replies:

>> false : bool

This means the value of 1>2 is false and the type of 1>2 is boolean.

The values true and false are the only values whose type is boolean. Every boolean expression evaluates to either true or false.