On Mon, 01 Apr 2013 15:10:46 +0800, Ben Wu said: > 1> I found some placeuse two "!!", what's means > if(button->gpio != INVALID_GPIO) > state = !!((gpio_get_value(button->gpio) ? 1 : 0) ^ button->active_low); > else Gaah. That line of code fell out of the ugly tree and hit every branch on the way down. Use of "!!" *and* "? 1 :0 " in the same line of code to do the same thing. Ouch.
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