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Data::Printer::Profile - customize your Data::Printer with code


    package Data::Printer::Profile::MyProfile;

    sub profile {
        return {
            show_tainted => 1,
            show_unicode => 0,
            array_max    => 30,

            # ...and so on...

Then put in your '.dataprinter' file:

    profile = MyProfile

or load it at compile time:

    use DDP profile => 'MyProfile';

or anytime during execution:

    p $some_data, profile => 'MyProfile';


Usually a .dataprinter file is enough to customize Data::Printer. But sometimes you want to use actual code to create special filters and rules, like a dynamic color scheme depending on terminal background or even the hour of the day, or a custom message that includes the hostname. Who knows!

Or maybe you just want to be able to upload your settings to CPAN and load them easily anywhere, as shown in the SYNOPSIS.

For all those cases, use a profile class!

Creating a profile class

Simply create a module named Data::Printer::Profile::MyProfile (replacing, of course, "MyProfile" for the name of your profile).

That class doesn't have to inherit from Data::Printer::Profile, nor add Data::Printer as a dependency. All you have to do is implement a subroutine called profile() that returns a hash reference with all the options you want to use.

Load order

Profiles are read first and expanded into their options. So if you have a profile called MyProfile with, for example:

    show_tainted = 0
    show_lvalue  = 0

And your .dataprinter file contains something like:

    profile     = MyProfile
    show_lvalue = 1

The specific 'show_lvalues = 1' will override the other setting in the profile and the final outcome will be as if your setup said:

    show_tainted = 0
    show_lvalue  = 1

However, that is of course only true when the profile is loaded together with the other settings. If you set a profile later, for instance as an argument to p() or np(), then the profile will override any previous settings - though it will still be overridden by other inline arguments.


Data::Printer Data::Printer::Filter