Objective-C with respect to C# and Java
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This document provides an overview of Objective-C and compares its terminology and syntax to C#, Java, and C++. It discusses how Objective-C is a thin layer on top of C that adds object-oriented programming features like messaging. It also notes that Objective-C is dynamically typed and linked for flexibility. The document then compares class and method declaration syntax between Objective-C and C#, and discusses topics like properties, strings, comments, and interfaces/protocols in Objective-C.
Objective-C with respect to C# and Java
- 1. Objective‐C with respect to C# and Java C# and Java Presented by Presented by Babul Mirdha
- 2. Babul Mirdha Founder at েসcা.Net (www.seccha.net) Organizer at Organizer at Having more than 5 years of working experiences with g p iOS, Android, Windows Phone, Web & Desktop (.Net) app development, I have worked with various languages, technologies & tools in different environment. iOS Developers Meetup Senior Software Engineer at LeadSoft Bangladesh Limited
- 3. Overview • Objective‐C Objective C – A thin layer on top of C and a strict superset of C; –Object‐Oriented Programming language b d l –follows ANSI C style coding –that adds Smalltalk‐style messaging that adds Smalltalk style messaging
- 4. Dynamic Language Dynamic Language • There is no formal written standard – Relies mostly on libraries written by others • Flexible almost everything is done at runtime Flexible almost everything is done at runtime. – Dynamic Binding – Dynamic Typing – Dynamic Linking • This allows for greater flexibility • Minimizes RAM and CPU usage
- 6. Class Declaration Class Declaration .NET C# Objective‐C cass AClass : Object { int aValue; void doNothing(); g() String returnString(); } @interface AClass : NSObject { int aValue; } ‐ (void)doNothing(); + (NSString)returnString(); @ @end
- 7. Method Declaration • Two type of Method: – Class Method – Instance method • A class method – indicated by a plus (+) character. – associated with the class type. • An instance method – indicated by a minus (‐) character indicated by a minus (‐) character. – associated with an instance object associated with the class.
- 9. How to pass parameters to method. How to pass parameters to method.
- 11. Properties
- 12. Strings
- 13. Immutable vs Mutable String Immutable vs Mutable String
- 16. Comments
- 18. Q & A
- 19. Thank You All