int starItemCount = _starTextArrary == null 5 :_starTextArrary.Length; 这句定义该怎么解释呀

int starItemCount = _starTextArrary == null 5 :_starTextArrary.Length; 这句定义该怎么解释呀
int starItemCount = _starTextArrary == null 5 :_starTextArrary.Length; 这句定义该怎么解释呀

int starItemCount = _starTextArrary == null 5 :_starTextArrary.Length; 这句定义该怎么解释呀
等价于下面的语句
int starItemCount;
if(_starTextArray == null)
{
starItemCount = 5;
}
else
{
starItemCount = _starTextArray.Length;
}
(bool)?a:b;三目运算符,bool为真返回a,否则返回b.