objective c - ios: gdb p (CGFloat) [[self view] center].x -

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how p(print) cgfloat in xcode gdb:

gdb p (cgfloat) [[self view] center].x

result:

unable call function "objc_msgsend" @ 0x184e08c: no return type information available. call function anyway, can cast return type explicitly (e.g. 'print (float) fabs (3.0)')

you have cast objective-c method calls when using gdb.

gdb p (cgfloat) ((cgpoint)[(uiview *)[self view] center]).x

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