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Asked: 2026-06-05T18:08:30+00:00

I presume that ‘rvalue’ is just shorthand for return value . What does it

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I presume that ‘rvalue’ is just shorthand for return value. What does it mean to initialize a return object? This is my main question. The rest is context of my particular situation, but I’m really interested in the general answer.

I’m looking at someone else’s code:

return [p_facebook.facebook handleOpenURL:url];

In theory this is calling:

- (BOOL)handleOpenURL:(NSURL *)url;

I’m seeing: Cannot initialize return object of type 'BOOL' (aka 'signed char') with an rvalue of type 'id'. I’m guessing that this class might be defined somewhere else and I have a path issue…

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1 Answer

  1. Editorial Team

    In this context, rvalue is not “return value” but shorthand for (roughly) “right-hand value,” or an object that appears on the right hand side of an assignment or statement. I think you may find in the implementation of -handleOpenURL: that it returns an object of type id at some point, which is obviously incompatible with the declared BOOL return type. If you have access to the source of -handleOpenURL:, I’d recommend checking there for erroneous returns first.

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