---
title: Logical operators
card_id: 90049
modified: yes
---

# Logical operators

### not

Results in `true` if the expression on its right is false, and `false` if the expression on its right is true.

```
not (it contains "stack")
not (the number of this card is 1)
```

### and

Results in `true` if both the expression to its left and the expression to its right are true.

```
(N = 0) and (the number of this card = 1)
(the name of this card is "index") and ¬
(the number of this card = 1) and ¬
(myVar is not false)
```

### or

Results in `true` if either the expression to its left or the expression to its right is true.

```
(N = 1) or (the number of this card < 10)
basicTerm is "button" or ¬
basicTerm is "field" or ¬
basicTerm is "card" or ¬
basicTerm is "background" or ¬
basicTerm is "stack"
```

## Related Topics

* [if (multiple-statement)](/HyperTalkReference/keywords/if-multiple-statement)
* [if (single-statement)](/HyperTalkReference/keywords/if-single-statement)
* [repeat](/HyperTalkReference/keywords/repeat)
* [repeat for](/HyperTalkReference/keywords/repeat-for)
* [repeat until](/HyperTalkReference/keywords/repeat-until)
* [repeat while](/HyperTalkReference/keywords/repeat-while)
* [repeat with](/HyperTalkReference/keywords/repeat-with)