[cfe-users] C++ lambdas more expensive than blocks?

[Jens Alfke via cfe-users]

> On Oct 24, 2016, at 12:00 PM, Benjamin Kramer <benny.kra at gmail.com> wrote:
> 
> a helper class such as llvm::function_ref[1] might come
> in handy, which acts like a function pointer but also allows captures
> to be passed around.

Thanks. Is that class something I can just copy-and-paste into my code? Will it work with other compilers like GCC or MSVC?
(Sorry if these are naive questions; I’m not knowledgeable enough about templates to be able to understand that source code.)

—Jens
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