单选题有关Assigned的说法哪个是正确的?()A其他三项都不对BAssigned的作用是判断一个对象是否为Nil,如果是Nil,返回True,如果不是Nil,返回FalseCAssigned的参数可以是对象或者方法,或者是一个指针DAssigned的作用是判断Assign过程是否已经完成
单选题
有关Assigned的说法哪个是正确的?()
A
其他三项都不对
B
Assigned的作用是判断一个对象是否为Nil,如果是Nil,返回True,如果不是Nil,返回False
C
Assigned的参数可以是对象或者方法,或者是一个指针
D
Assigned的作用是判断Assign过程是否已经完成
参考解析
解析:
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