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1. Top results related to objective-c

   • C vs C++ (Objective-C vs Objective-C++) for iPhone

     Top Answer

     Answered Nov 14, 2009 · 11 votes

     They're not really different languages. Objective-C++ is just Objective-C with slightly limited support for including C++ code. Objective-C is the standard dialect, but if you need to work with C++, there's no reason not to use it. AFAIK, the biggest practical difference (aside from allowing use of different libraries) is that Objective-C++ seems to compile a bit slower. Just be sure to read up on it first if you do decide to go that route, because the merging of C++ and Objective-C is not 100% seamless.

     Other Answers

     Answered Nov 14, 2009 · 20 votes

     If you're writing a portable library, and don't need specific language features for it, why not write it in straight C? It can be easily called from C++, C, Objective-C, and many, many other languages.

     If you require specific language features that aren't available in C, you should tell us what they are so you can get better advice =)

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     Answered Mar 12, 2014 · 17 votes

     I believe your information is incorrect. Objective-C++ is a superset of C++. Any C++ is legal Objective-C++. In addition, you can mix Objective-C and C++ code in an Objective-C++ (usually .mm) file and (with some restrictions) mix Objective-C and C++ class instance variables within an Objective-C++ class. Objective-C++ is particularly useful for interfacing between Objective-C and a C++ library. Write your cross-platform library in C++. You can then call it from Objective-C++ within an application. Re-read the Objective-C++ section of the Objective-C language guide for more info.

     The major downside to using Objective-C++ is increased compile times (Objective-C++ is even worse than C++ and the Clang LLVM compiler doesn't handle Objective-C++ yet). There is no performance difference between Objective-C and Objective-C++ beyond any differences in the code that's called (e.g. if you're a better C++ dev., your C++ will probably be more efficient than your C library and visa versa).

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     1/5

   • C/C++/Objective-C text recognition library

     Top Answer

     Answered Jun 24, 2020 · 14 votes

     The most famous one is Tesseract OCR developed initially by Motorola and later become open source. It is also promoted by Google.

     There are a few more, perhaps not as famous as Tesseract: http://en.wikipedia.org/wiki/OCRopus http://jocr.sourceforge.net/

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     2/5

   • C++ and Objective-C autorelease problem

     Top Answer

     Answered Oct 04, 2010 · 2 votes

     As far as I understood your question, you have the bottom layer in a thread which calls the middle layer. As you already discovered you have to have an autorelease pool if you want to use the Cocoa framework (it's not about Objective-C ;)).

     You should either create one at thread creation or create and release one for every request to middle layer. Your “solution” does create one on demand which lives until the end of the thread's days

     Which one is best depends on your architecture:

     • How long is the thread living?
     • Is it okay to have only a single autorelease pool for it's whole life?

     Update:

     When you release the temporary pool, you should be aware of exceptions if they may occur:

     id pool = [[NSAutoreleasePool alloc] init];@try { …} @finally { [pool release];}-

     If you do not have/use Objective-C exceptions DarkDust's answer is the correct way.

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     3/5

   • Objective-C class implements C++ interface

     Top Answer

     Answered Nov 08, 2012 · 3 votes

     If you want to mix C++ class in an objective C project the best idea seems to wrap your C++ types and functions with Objective-C equivalents. This is well explained in this article and here. Note that if you are using clang you can declare your C++ ivar in your class extension, this is probably the cleanest way.

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     4/5

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2. en.wikipedia.org › wiki › Objective-CObjective-C - Wikipedia

   en.wikipedia.org › wiki › Objective-C

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   Objective-C is a high-level general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. Originally developed by Brad Cox and Tom Love in the early 1980s, it was selected by NeXT for its NeXTSTEP operating system.

3. www.geeksforgeeks.org › what-is-objective-cWhat Is Objective C? (Definition, Uses, vs. Swift ...

   www.geeksforgeeks.org › what-is-objective-c

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   Mar 5, 2024 · Objective-C is a general-purpose, object-oriented programming language that was developed in the early 1980s by Brad Cox and Tom Love. Mainly, it is used for software development on Apple’s macOS, iOS (mobile), watchOS, and TVOS platforms.

4. www.tutorialspoint.com › objective_cObjective-C Tutorial - Online Tutorials Library

   www.tutorialspoint.com › objective_c

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   Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. This is the main programming language used by Apple for the OS X and iOS operating systems and their respective APIs, Cocoa and Cocoa Touch.

5. developer.apple.com › library › archiveAbout Objective-C - Apple Developer

   developer.apple.com › library › archive

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   Sep 17, 2014 · Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime.

6. www.coursera.org › learn › objective-cFoundations of Objective-C App Development - Coursera

   www.coursera.org › learn › objective-c

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   An introduction to the Objective-C programming language. This will prepare you for more extensive iOS app development and build a foundation for advanced iOS development topics. Objective-C programming requires a Mac laptop or desktop computer.

7. builtin.com › objective-cWhat Is Objective C? (Definition, Uses, vs. Swift) | Built In

   builtin.com › objective-c

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   Dec 22, 2022 · Objective C is a general-purpose, object-oriented programming language that’s a superset of C. Objective C has been around since 1980 and became the main language for NeXTSTEP operating system. NeXTSTEP is the system from which Apple derived iOS and OS X.

8. clouddevs.com › objective-c › getting-started-withA Beginner's Guide to Objective-C: Getting Started with iOS ...

   clouddevs.com › objective-c › getting-started-with

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   1. Understanding Objective-C: An Introduction. Objective-C is a powerful and widely-used programming language that forms the foundation of iOS and macOS app development. This section provides an overview of Objective-C, its features, and its role in the Apple ecosystem. 1.1 What is Objective-C?