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.

What are variadic templates and how do they relate to fold expressions?

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Explain the concept of a binary operation over a list of elements using fold expressions.

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How does the identity element affect the result of a fold expression?

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What is the difference between unary right fold and unary left fold?

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What happens if no arguments are passed to a unary fold expression?

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