sDir.st_mode 肯定有编码规则，而 S_IFMT 是一个bit MARK（例：0x00E0）, 两者相与后，相当于取到S_IFMT相关的那段子编码，然后判断是否与S_IFDIR相等。理解了吗？
std::move和std::forward只是执行转换的函数(确切的说应该是函数模板)。std::move无条件的将它的参数...
# 需要导入模块: import stat [as 别名]# 或者: from stat importS_IFMT[as 别名]defcal_mode(mode):ifstat.S_ISLNK(mode):returnstat.S_IFLNKelifstat.S_ISDIR(mode):returnstat.S_IFDIRelifstat.S_IFMT(mode) == S_IFGITLINK:returnS_IFGITLINK ret = stat.S_IFREG |0o644ret |= (mode &0o11...
switch (sb.st_mode & S_IFMT) { case S_IFBLK: printf("block device\n"); break;case S_IFCHR: printf("character device\n"); break;case S_IFDIR: printf("directory\n"); break;case S_IFIFO: printf("FIFO/pipe\n"); break;case S_IFLNK: printf("symli...
ls2.c:93: `S_IFDIR' undeclared (first use in this function) ls2.c:94: `S_IFCHR' undeclared (first use in this function) ls2.c:95: `S_IFBLK' undeclared (first use in this function) when I compile it with: gcc -std=gnu99 -D_POSIX_C_SOURCE=200112L -g -Wall ls2.c -o ls2...