[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [IdSpecialization](./rc-js-util.idspecialization.md) ## IdSpecialization class Mirrors the C++ class of the same name. A specialization of a conceptual category. E.g. a number (category) which is a float 32 (specialization). **Signature:** ```typescript export declare class IdSpecialization extends StableId ``` **Extends:** [StableId](./rc-js-util.stableid.md) ## Remarks There should only be one instance of a conceptual class (which should have a unique name) ## Constructors

Constructor	Modifiers	Description
[(constructor)(category, specializationName)](./rc-js-util.idspecialization._constructor_.md)		Constructs a new instance of the `IdSpecialization` class

## Properties

Property	Modifiers	Type	Description
[category](./rc-js-util.idspecialization.category.md)	`readonly`	[IdCategory](./rc-js-util.idcategory.md)