sass-site/source/documentation/operators/boolean.md

title	introduction
Boolean Operators	Unlike languages like JavaScript, Sass uses words rather than symbols for its [boolean](/documentation/values/booleans) operators.

• not <expression> returns the opposite of the expression's value: it turns true into false and false into true.
• <expression> and <expression> returns true if both expressions' values are true, and false if either is false.
• <expression> or <expression> returns true if either expression's value is true, and false if both are false.

{% codeExample 'boolean', false %} @debug not true; // false @debug not false; // true

@debug true and true; // true @debug true and false; // false

@debug true or false; // true @debug false or false; // false

@debug not true // false @debug not false // true

@debug true and true // true @debug true and false // false

@debug true or false // true @debug false or false // false {% endcodeExample %}

{% render 'doc_snippets/truthiness-and-falsiness' %}