文件测试操作if (-w -r $file)
- #!/usr/local/bin/perl
- chomp($file=<STDIN>);
- if (-r $file and -W _)
- {
- print "$file is both read and write\n";
- }
-
- if (-w -r $file)
- {
- print "$file is both read and write (new)\n";
- }
-
- use 5.010;
- if (-w -r $file)
- {
- print "$file is both read and write (new1)\n";
- }
/etc/fstab
/etc/fstab is both read and write
/etc/fstab is both read and write (new)
/etc/fstab is both read and write (new1)
我发现好像不加use 5.010;也可以啊，但是小骆驼说是5.010的新特性啊。谁知道怎么回事？
作者: linuxboy823 发布时间: 2011-06-09
你没试试不加 use 5.010; 也可以用 ~~ ？加上 feature 这个 pragma 是为了怕和老代码冲突，而 operator 根本不可能冲突，因为以前是语法错误
作者: zhlong8 发布时间: 2011-06-09