[PBP-pm] what's the correct way to do eval
chris at chrisdolan.net
Tue Dec 25 21:00:23 PST 2007
On Dec 24, 2007, at 9:59 PM, Randal L. Schwartz wrote:
>>>>>> "Fayland" == Fayland Lam <fayland at gmail.com> writes:
> Fayland> have to replace this:
> Fayland> my $has_proc_pid_file = eval "use Proc::PID::File; 1;";
> Fayland> it complaints Expression form of "eval" at line 7, column
> 25. See page
> Fayland> 161 of PBP.
> There *is* no replacement for that, which is why PBP is a guide,
> not a gospel.
> What you did is perfectly fine for that task.
Huh? Isn't the following equivalent?
my $has_proc_pid_file = eval "require Proc::PID::File;
I'm not saying it's definitely better, but I thought it was a valid
replacement. In fact, I was sure of it until I noticed it was Randal
saying otherwise. :-)
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