标签 是后面跟有冒号的标识符,格式如下: label : java中通过break与continue关键词可以完成类似于跳转的操作,其实现机制便是标签. 虽然很少有人使用,但是其有自身的适用场景:多层嵌套,跳转到指定循环体中. 练习示例: public static void main(String[] args) { int i = 0; outer: while(true){ System.out.println("this is the start of outer loop!"
7. error: reference to field ‘Printf’ in object which has no fields or methods f.Printf("%v", (Map(f,m)))问题点:在启用import f "fmt"后,如果再在函数中定义变量f时,如果使用f.Print**,这就会出现上述错误了. 8.error: argument 1 has incompatible type (cannot use type int64 as