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This is the documentation for a snapshot of the master branch, built from commit b9ab49fc70.
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Function template left

boost::yap::left

Synopsis

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


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

Description

Returns the left operand in a binary operator expression.

Equivalent to get(expr, 0_c).

[Note] Note

left() is only valid if Expr is a binary operator expression.


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