In this example, we assigned an anonymous function to a variable. Undefined tells us that a variable has not been assigned a value . But it's still a constant because it doesn't change after assignment . The premise of value helps determine,‘the value to whom?”.
Remember, we have already assigned a value of“0” to the integer x. This is because age has not been assigned a value . Remember that the default value is evaluated only once. A variable is created when it is assigned for the first time. In this case age is assigned the value 0. 给定x=10和y=5,下面的表格解释了赋值 运算符:. Given that x=10 and y=5, the table below explains the assignment operators. Value type variables can be assigned a value directly.如果你需要使用一个条件表达式赋值 ,一个常见的做法是将分配额外的括号。 If you need to use an assignment in a conditional expression, a common practice is to put additional parentheses around the assignment. . A name on the left hand side is assigned , or bound, to the r. h. s. object. 即只有无前提的函数,例如赋值 运算符,才能安全地在对象被移动后使用:. That is, only the functions without preconditions, such as the assignment operator, can be safely used on the object after it was moved from. 一旦变量s被赋值 为null后,Stack和相应的10个Node实例就变成符合碎片收集的条件了。 Once the variable s is assigned null, the Stack and the associated 10 Node instances become eligible for garbage collection. 这种改变赋值 --或者叫做可变状态--是迭代的特征。 This changing value - or mutable state- is characteristic of iteration. The type on the left hand side of the assignment operator must be identical to the type on the right hand side.
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结果: 372 ,
时间: 0.0283
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