C++20 Lambdas: Familiar Template Syntax
summary
C++20 adds a template head to lambdas so code that used helper functions just to destructure types can be replaced by an immediately-invoked familiar template lambda, collapsing the std::apply helper and tuple-for-each patterns into a single expression. Examples show unary and binary tuple algorithms using non-type template parameter packs and reference-capture preserves forwarding/value-category. Result is substantially less boilerplate, fewer identifiers, and working, more compact code for tuple and typelist destructuring.
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