Is it `true` or `false`? This test is used very often while coding. The form for testing `true`/`false` may not be straightforward. Sometimes it is a result of function, a variable, or a combination of those. But the rule is simple.

Try the following examples and see what makes it `true` or `false`.

#### Live Examples

``````(true? true)
``````
``````(false? false)
``````
``````(true? 2)
``````
``````(true? (= 2 4/2))
``````
``````(false? (= 2 2 3))
``````
``````(not (true? (= 3 4)))
``````

The examples above test whether values are true or false. In contrast, examples below are truthy or falsey.

Since this is a pretty easy lab, it may be a good time to explain `(doc false?)` or the usage of functions of functions, like `(not (true? (= 3 4)))`.

#### Live Examples

``````
(if true :it-is-truthy :it-isn't-truthy)
``````
``````
(if 2 :it-is-truthy :it-isn't-truthy)
``````
``````
(if false :it-isn't-falsey :it-is-falsey)
``````
``````
(if nil :it-isn't-falsey :it-is-falsey)
``````
``````
(if-not true :it-isn't-truthy :it-is-truthy)
``````
``````
(if-not false :it-is-falsey :it-isn't-falsey)
``````
``````
(if-not (= 3/2 9/6) :it-isn't-truthy :it-is-truthy)
``````
For attendees who have programming backgrounds, it may be interesting to talk about the result of `(if (Boolean. "false") :truthy :falsey)`.