# bool Catapult::IsBuilt()

[Family: Catapult](/imperivm/en/CKS/familias/catapult/)

## Exact signature

```text
bool Catapult::IsBuilt()
```

## Description

Catapult::IsBuilt pops an 8-byte Catapult handle, validates it through the global unit registry, and pushes a 1-byte boolean indicating whether the 32-bit field at Catapult offset [field] is non-zero.

## Parameters and return type

**Return type:** `bool`

The member is called on an object. Its receiver is not repeated among this signature’s arguments.

This signature takes no additional arguments.

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