Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Constructor.

template<
    class Handler>
async_base(
    Handler&& handler,
    Executor1 const& ex1,
    Allocator const& alloc = Allocator());
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Move Constructor.

async_base(
    async_base&& other);
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async_base(
    async_base const&);
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