Good day everyone,
The function in boost\spirit\home\support\detail\as_variant.hpp seems to have no dep. on spirit, and it's a useful utility that would fit into fusion/support/as_variant.hpp>
IIUC it's a meta function that computes a variant<T0, ..., TN> from a fusion sequence<T0, ..., TN>. I think there's no reason for a runtime counterpart,
i.e. as_variant<Seq>::type is a valid expression but as_variant(Seq) and result_of::as_variant<Seq>::type is not. Thus, the function is already complete.
Does it seem reasonable to you to include in fusion? The work of moving it would be to only update the docs, as spirit2 probably does excessive testing of this function anyway.
I could collect the docs from other parts of fusion, and put together a separate test file if needed. All real work is already done, just presentation and formality that is lacking.
Have a nice weekend,
Christian
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