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Re: what is this "I"?
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Re: what is this "I"?


  • Subject: Re: what is this "I"?
  • From: Chris Espinosa <email@hidden>
  • Date: Sun, 7 Feb 2010 12:44:01 -0800

On Feb 7, 2010, at 11:28 AM, Matt Neuburg wrote:

> Sometimes a rectangle will appear around a term or line in Xcode with a
> little "i" in a circle off to its left. What is this little "i"? It seems to
> invite being clicked on (if you can get it to stay in existence long
> enough), but clicking on it does nothing (except to make it vanish).

While debugging, if you select an expression (such as a property access or a method call) and hover over the selected expression, the Evaluate symbol will appear. If you move over to that symbol and click on it (it's admittedly a little fussy) the expression will be evaluated and the result displayed in a debugger Data Tip.

It's the same as entering the selected expression in the Expressions window or using p <expr> or po <expr> at the gdb command line.

Sometimes gdb doesn't have the required data-type information to evaluate the expression, so it fails silently.

Chris _______________________________________________
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References: 
 >what is this "I"? (From: Matt Neuburg <email@hidden>)

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