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Since row.agendas.0.agendaDate retrieves the value inside the FOREACH loop,

But that is not a (singular) key or method , it is a compound expression

Template::Manual::VMethods says

An argument can be provided to specify a search key. Where an item in the list is a hash reference, the search key will be used to retrieve a value from the hash which will then be used as the comparison value. Where an item is an object which implements a method of that name, the method will be called to return a comparison value.

To see how its implemented view sub Template::VMethods::list_sort


In reply to Re^3: Sorting Template Toolkit Array of Hashrefs by Anonymous Monk
in thread Sorting Template Toolkit Array of Hashrefs by roho

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