A comparison between C++ and D

[bigsandwich via Digitalmars-d]

On Wednesday, 9 March 2016 at 01:18:26 UTC, maik klein wrote:
> Direct link: https://maikklein.github.io/post/CppAndD/
> Reddit link: 
> https://www.reddit.com/r/programming/comments/49lna6/a_comparison_between_c_and_d/
>
> If you spot any mistakes, please let me know.

C++ as well as D have anonymous functions. C++: [](auto a, auto 
b){ return a + b;} , D: (a, b) => a + b or (a, b){return a + b;}. 
As far as I know capturing other variables requires the GC in D. 
In C++ you can explicitly capture variables by copy, ref or move. 
Lambda functions in D can not return references. C++17 will also 
make lambda functions available with constexpr. Lambda functions 
can also be used at compile time in D.

Is this really true?  Couldn't the closure be stored internally 
somewhere like std::function<> does in C++?