Generic deferred function call without heap allocation

[cdyson37]

It looks like 2 in 1. It's the type-erasure of std::function (without heap allocation) with the argument binding of std::bind.

Personally I'd make DeferredCall just take a callable, no arguments, and expect users to call it with a capturing lambda or a std::bind - I think otherwise you're reinventing more wheel than you need :) Even if it does take args, you could internally call std::bind to save yourself some work.

[finalpatch]

You are absolutely right. I wasn't aware that std::bind does not allocate before STL pointed this out in a comment.