Thank you all for answering!
Regards
Ziping
> On Jun 16, 2018, at 1:13 PM, Elizabeth Mattijsen <l...@dijkmat.nl> wrote:
>
>> On 16 Jun 2018, at 10:59, Xin Cheng <xinchen...@gmail.com> wrote:
>> I am wondering why the IO::Path class doesn't have a "close" method. After I
>> read from a file by
>>
>> $filename.IO.lines -> $line;
>>
>> Am I supposed to close the file, or it is automatically closed for me after
>> the reading?
>
> If you read all of the lines from the file, then yes, the file will be closed
> automatically for you. This is *not* the case if you stop reading lines
> after a while. If you really want to be sure that the file will be closed in
> that case, you will need to do that yourself by opening the file first, e.g.
> like this:
>
> with open($filename) -> $handle {
> LEAVE $handle.close;
> for $handle.lines -> $line {
> return if $line eq ‘foo’; # will close
> }
> }
>
> As soon as the scope of “with” is left, in whatever way, the file will be
> closed by the LEAVE phaser.
>
>
>
> Liz
