Perl doesn't have true private methods. Underscores are merely a convention to indicate that a sub is intended for internal use only.

It is possible to create do-it-yourself private subs by checking caller within a sub and then calling die if the caller is outside your module. Though this will have a performance impact if you do it a lot, and is of questionable benefit.

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re^3: Moose: using value of one attribute in another attribute by tobyink
in thread Moose: using value of one attribute in another attribute by mimosinnet

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