codama-idl-codama/packages/nodes/docs/countNodes/PrefixedCountNode.md

PrefixedCountNode

A node that represents a count strategy where the number of items is stored as a number prefix. This enables nodes such as ArrayTypeNode to represent arrays such that their length is stored as a prefix.

Attributes

Data

Attribute	Type	Description
kind	"prefixedCountNode"	The node discriminator.

Children

Attribute	Type	Description
prefix	NestedTypeNode<NumberTypeNode>	The node that determines the number of items.

Functions

prefixedCountNode(prefix)

Helper function that creates a PrefixedCountNode object from a number node.

const node = prefixedCountNode(numberTypeNode(u32));

Examples

An variable array of public keys prefixed with a u32

arrayTypeNode(publicKeyTypeNode(), prefixedCountNode(numberTypeNode(u32)));