Presentation of a technique that enables transparent interception of the selected arguments passed to any function by means of a user-provided predicate metafunction.

Selective argument application

by Krzysztof Ostrowski

From the article:

Presentation of a design of an interceptor abstraction built over C++17 utilities that records values of the selected arguments passed to any action transparently, then applies that action to the captured arguments, and eventually passes the result value to the next action.