alternative operator name 可选择的操作符名字
Note that only a policy which includes the Optional attribute or the <wsp:ExactlyOne> operator has more than one alternative.
注意,只有包含 可选属性或 <wsp:ExactlyOne> 操作符的策略才有多个替代。
If you prefer not to use a long string concatenation statement like this, an alternative is to use the string formatting operator which enables you to have an expression like.
如果不喜欢使用这么长的字符串连接语句,另一种方法是使用字符串格式操作符,可以使用下面这样的表达式。
An alternative is to use the format operator, %. When applied to integers, % is the modulus operator. But when the first operand is a string, % is the format operator.
另外一个方法就是用格式运算符,也就是百分号%。在用于整数的时候,百分号%是取余数的运算符。但当第一个运算对象是字符串的时候,百分号%就成了格式运算符了。
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