关于readdir返回值中struct dirent.d_type的取值问题 原网页链接 http://www.gnu.org/software/libc/manual/html_node/Directory-Entries.html 原文及翻译 混在一起写了 unsigned char d_type This is the type of the file, possibly unknown. The following constants are defined for its val…
java中int,float,long,double取值范围是多少? 写道 public class TestOutOfBound { public static void main(String[] args) { System.out.println(Integer.MAX_VALUE-(-Integer.MAX_VALUE)); //内存溢出System.out.println(Integer.MAX_VALUE); //2的31次方-1,10个数位,正的20亿左右,用在钱上面不一定够Sy…
建议 for 语句的循环控制变量的取值采用“半开半闭区间”写法. #include <iostream> /* run this program using the console pauser or add your own getch, system("pause") or input loop */ using namespace std; enum Color {Red,Yellow,Green,White}; //圆类Circle的定义 class Circle…
entity: public class Employee { private Integer id; private String name; private Integer age; private Group group;} test测试代码 @Test public void test00(){ List<Employee>ems=Arrays.asList( new Employee(1, "李四1", 15), new Employee(2, "李四2…
