scala运算符_Scala没有++或–运算符，如何增加或减少整数？

scala运算符

The Scala programming language doesn't support unary operators (++ or --). In Scala, the binary operators are used to increment and decrement an integer.

Scala编程语言不支持一元运算符( ++或- )。 在Scala中，二进制运算符用于递增和递减整数。

Common binary operators for increasing and decreasing an integer, we use the increase and assign or decrease and assign operator.

对于增加和减少整数的常见二进制运算符，我们使用增加和分配或减少和分配运算符。

1. Increase and assignment operator : +=

   增加和赋值运算符： + =

2. Decrease and assignment operator : -=

   减少和赋值运算符： -=

Working example:

工作示例：

object myClass{
    def main(args: Array[String]){
        var a = 45 ; 
        println("initial value of a "+a)
        // incrementing the value 
        a += 1
        println("incremented value of a "+a)
        // decreasnig the value 
        var b= 78
        println("initial value of b "+ b)
        b-=1
        println("decremented value of b "+b)
    }
}

Output

输出量

initial value of a 45
incremented value of a 46
initial value of b 78
decremented value of b 77

翻译自: https://www.includehelp.com/scala/scala-has-no-plus-plus-or-minus-minus-operator-how-to-increment-or-decrement-an-integer.aspx

scala运算符