Re: Obj-C questions: protocol "casting"; random
Re: Obj-C questions: protocol "casting"; random
- Subject: Re: Obj-C questions: protocol "casting"; random
- From: j o a r <email@hidden>
- Date: Fri, 21 Feb 2003 15:24:46 +0100
On Friday, Feb 21, 2003, at 15:14 Europe/Stockholm, email@hidden
wrote:
1) Is anything like this possible:
SomeReturnValue* val = [(SomeProtocol*)obj someMethod:anArg
someArg:otherArg];
That is, I know that the object should conform to a protocol, but I
don't know
what class it will be.
I want the compiler to recognize the method (which may have arguments)
and
understand what arguments and return values are expected. Should I
just pick
one of the conforming classes and "cast" to that?
SomeReturnValue *val = [(id < MyProtocol >)obj someMethod: arg];
Read the Obj-C PDF that was installed with your development tools!
2) Are there any Random / RandomSeed functions provided anywhere in
Cocoa or
CF?
Use the ones available in the plain C libraries, read the man-pages.
j o a r
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