在Perl中打开File方法

Question

我测试>>并>在下面我的代码打开目标文件,它工作得很好.他们有什么不同？

my $sourfile = "ch1.txt";
my $destfile = "chapter1.txt";

open (SOURFILE, $sourfile);
open (DESTFILE, ">>$destfile"); #both >> and > work here.

#my $fh = \*DATA;  
my $fh = \*SOURFILE;

Answer 1

区别:

>    Open file for writing.
>>   Open file for appending.

您可能希望切换到使用open参数的3参数形式,并使用词法变量作为文件句柄:

open(my $handle, '>', "some_file") or die $!;