Complete Modern C++ - Fold Expressions - Unary Folds

The video tutorial explains how to use variadic templates to write fold expressions in C++17. It covers the concept of fold expressions, which allow for compact syntax to apply binary operations to parameter packs. The tutorial discusses different types of fold expressions, including unary and binary folds, and demonstrates how to implement a sum using these expressions. It also addresses potential issues when no arguments are passed and suggests using binary folds to handle such cases.

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