# URL.ParseStrategy.ComponentParseStrategy The strategy used to parse one component of a URL. ``` enum ComponentParseStrategy where Component : Decodable, Component : Encodable, Component : Hashable, Component : Sendable ``` ## Overview Use this type with the [`URL.ParseStrategy`](/documentation/Foundation/URL/ParseStrategy) initializer and static accessors, or its modifier methods, to specify behavior for parsing components of a URL. This allows you to reject URL candidate strings that lack required components — such as a scheme, host, or path — or to fill in default values while parsing. ## Topics ### Component parse strategies [`case required`](/documentation/Foundation/URL/ParseStrategy/ComponentParseStrategy/required) A strategy that requires the presence of the associated component for parsing to succeed. [`case optional`](/documentation/Foundation/URL/ParseStrategy/ComponentParseStrategy/optional) A strategy that treats the presence of the associated component as optional. [`case defaultValue(Component)`](/documentation/Foundation/URL/ParseStrategy/ComponentParseStrategy/defaultValue(_:)) A strategy that provides a default value for a component if it’s absent in the source string. ## Relationships ### Conforms To [`Encodable`](/documentation/Swift/Encodable) [`Decodable`](/documentation/Swift/Decodable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible) [`Hashable`](/documentation/Swift/Hashable) [`Sendable`](/documentation/Swift/Sendable) [`Equatable`](/documentation/Swift/Equatable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)