Ep 414: C++26's Placeholder Variables With No Name

Summary

This episode explores C++26's new placeholder variable feature, which allows developers to use an underscore (_) as a variable name when the value is needed syntactically but won't be referenced. Jason demonstrates how this feature solves the common problem of having to assign unique dummy names to unwanted structured binding values. Through code examples, he shows that multiple variables can have the underscore name in the same scope, though attempting to reference the placeholder becomes ambiguous.