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Karthick S
Karthick S

Reputation: 3304

What is wrong with my File::Find::Rule->grep call?

I am trying to fetch the list of .cpp files that have a class "MyClass" being used in it.

Here is the snippet:

use File::Find::Rule;
my @match_files = File::Find::Rule->file()->name('*.cpp')->in('.')->grep("MyClass");

However, this is giving the following error:

Can't call method "grep" without a package or object reference at ./script.pl line 20.

Can someone help me understand what is wrong with this call?

Upvotes: 0

Views: 273

Answers (1)

amon
amon

Reputation: 57600

The error tells you that the LHS of the last -> operator was not an object. That is because the in method evaluates the rule and returns a list of matching files.

So you should probably swap the grep and the in:

my @files = File::Find::Rule->file->name('*.cpp')->grep(qr/MyClass/)->in('.');

You can re-read the documentation at MetaCPAN.

Upvotes: 3

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