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Subject: [std-proposals] Operator for reference casting
From: Jean-Baptiste Vallon Hoarau (jeanbaptiste.vallon_at_[hidden])
Date: 2021-01-15 07:49:05


Hello everyone,

I think you are all aware how verbose perfect forwarding is. I haven't seen
any proposal that could tackle this (admittedly minor) issue so far, except
the one on hygienic macros.
So what if we had an operator for casting to a reference?
For example, given a value x, than the following could be equivalent :
x& -> static_cast<decltype(x)&>(x)
x&& -> static_cast<decltype(x)&&>(x)

This would make forwarding a lot less cumbersome to write/read (goodbye
decltype(x)(x), hello x&&). However, I don't see many use cases for
explicit lvalue cast, and this would be at odd with lambda capture syntax.

Let me know what you think.
-Jean-Baptiste



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