Boost C++ Libraries

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This is the documentation for a snapshot of the master branch, built from commit 064f557086.

Function template cond

boost::yap::cond

// In header: <boost/yap/algorithm.hpp>


template<typename Expr> constexpr decltype(auto) cond(Expr && expr);

Returns the condition expression in an if_else expression.

Equivalent to get(expr, 0_c).

	Note
	`cond()` is only valid if Expr is an `expr_kind::if_else` expression.