# equals · FT4 Rell API · Chromia Docs (concept)

> function equals(rule_ parameters: rule_parameters ): rule_expression Composes a rule from the rule_parameters and the eq operator Parameters rule_parameter

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.accounts/equals/

FUNCTION

# equals

```signature
function equals(rule_parameters: rule_parameters): rule_expression
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/accounts/auth_descriptor_rule_expression.rell#lines-113)

Composes a rule from the `rule_parameters` and the `eq` operator

**Parameters**

* **rule\_parameters** — the variable and value to use in the rule

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.accounts/equals.html)Generated API reference, mirrored from the live docs