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Objective-C cheat sheet & developer notes

Objective-C cheat sheet and 2 curated developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · Objective-C

Syntax, Properties & Memory Basics

Objective-C: Syntax, Properties & Memory Basics. Interface, Implementation & Messaging. // Person.h — public interface #import <Foundation/Foundation.h> NS_ASSUME_NONNULL_BEGIN @interface Person : NSObject @property (non…

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02 · Objective-C

Protocols, Categories & Runtime Dynamics

Objective-C: Protocols, Categories & Runtime Dynamics. Protocols & Delegation. // Protocol declaration — an interface contract @protocol PersonDelegate <NSObject> @required - (void)person:(Person *)person didUpdateAge:(N…

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