unary operator

一元运算符

  • In the final example the value of the HOME variable is tested to see if it is a directory using the-d unary operator .

    在最后一个示例中,测试HOME变量的值,用 操作符 -d检查它是不是目录。

  • This unary / binary global operator can only have one or two parameters

    /二进制全局 运算符只能具有一个或两个参数

  • The unary - ( minus ) operator yields the negation of its numeric argument .

    运算符-(减)对其数值型 操作 负。

  • Defining this unary operator in Scala is slightly tricky but it 's purely a syntactic nit

    在Scala中定义这种 操作符”需要 点技巧,但这只是语法上的问题而已

  • Unary minus operator applied to unsigned type result still unsigned

    运算符应用于无符号类型,结果仍为无符号类型

  • A unary operator such as Minus is left as an exercise .

    像负号这样的一 运算符就留给 读者练习。

  • The parameter of a unary operator must be the containing type

    运算符的参数必须是包含类型

  • The unary operator-z tests for a null string while-n or no operator at all returns True if a string is not empty .

    操作符-z测试null字符串,如果字符串非空-n返回True(或者根本没有 操作符)。