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2388351
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2010-03-06T13:42:23.920
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2010-03-05T16:43:10.997
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2010-03-06T13:42:23.920
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2010-03-06T13:42:23.920
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text
Body
I didn't find anything satisfactory and came up with a prototype that, given the following informal protocol: <pre><code>- (NSString*)concatString:(NSString*)s1 withString:(NSString*)s2; </code></pre> and this C++ code: <pre><code>struct CppClass { std::string concatStrings(const std::string& s1, const std::string& s2) const { return s1+s2; } }; std::string concatStrings(const std::string& s1, const std::string& s2) { return s1+s2; } </code></pre> allows creating and passing a delegate: <pre><code>CppClass cpp; og::ObjcClass objc("MyGlueClass"); objc.add_handler<NSString* (NSString*, NSString*)> ("concatString:withString:", &cpp, &CppClass::concatStrings); // or using a free function: objc.add_handler<NSString* (NSString*, NSString*)> ("concatString:withString:", &concatStrings); [someInstance setDelegate:objc.get_instance()]; </code></pre> which can then be used: <pre><code>NSString* result = [delegate concatString:@"abc" withString:@"def"]; assert([result compare:@"abcdef"] == NSOrderedSame); </code></pre> Boost.Function objects can also be passed, which means Boost.Bind can easily be used as well. While the basic idea works, this is still a prototype. I did a short <a href="http://colonelpanic.net/2010/03/objectiveglue/" rel="nofollow noreferrer">blog post</a> on the subject and the prototype source is available <a href="http://bitbucket.org/cygmatic/cygmatic/src/tip/og/" rel="nofollow noreferrer">via bitbucket</a>. Constructive input and ideas welcome.
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1. This table or related slice is empty.
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1. POeasing c++ to objective-c/cocoa bridging via metaprogramming?
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1. PTAnswer
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1. USGeorg Fritzsche
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1. USGeorg Fritzsche
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1. POeasing c++ to objective-c/cocoa bridging via metaprogramming?
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