visit_top() [4/6]

template<typename T >

template<typename Func >

std::result_of< Func(constPtr)>::type syten::BinaryTree::Tree< T >::visit_top ( Func &&  f, typename std::result_of< Func(Ptr)>::type  initial, IterFirst const  dir = IterFirst::Left  ) const

inline

Visits each node, starting at the root node for const trees.

Parameters

f	function to call on each pointer to a node
initial	initial value of the accumulator
dir	left or right branch first?

Returns

the accumulated value from the root node and each branch

References syten::BinaryTree::Tree< T >::r, and syten::BinaryTree::Tree< T >::visit_top_rec().

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