Using base.pm has the following differences from just pushing the classes onto @ISA:

1) It initialises the %FIELDS hash if one of the base classes has it.

2) Note that because of this multiple inheritance is not supported when using base.pm (Update: this restriction only applies when also using fields -- see link below.)

3) When strict 'vars' is in scope, using base also lets you assign to @ISA without having to declare @ISA with the 'vars' pragma first.

See also http://www.perl.com/doc/manual/html/lib/fields.html

One world, one people

In reply to Re: @ISA vs. base by anonymized user 468275
in thread @ISA vs. base by rvosa

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