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_subtreeDescription: What do the ampersands mean?

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_subtreeDescription: What do the ampersands mean?

Subject: _subtreeDescription: What do the ampersands mean?
From: "Michael A. Crawford" <email@hidden>
Date: Wed, 26 Aug 2009 22:22:07 -0400

In the line of GDB output below, what do the ampersands following the h= and v= mean?

(gdb) po [self _subtreeDescription] [ D A W#] h=--& v=&-- NDView 0x10012fca0 f=(0,113,480,473) b=(-) => <CALayer: 0x1001304d0> TIME drawRect: min/mean/max 0.00/0.00/0.00 ms A=autoresizesSubviews, C=canDrawConcurrently, D=needsDisplay, F=flipped, G=gstate, H=hidden (h=by ancestor), O=opaque, P=preservesContentDuringLiveResize, S=scaled/rotated, W=wantsLayer (w=ancestor wantsLayer), #=has surface

-Michael


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