headtree>alist[) ( to-key tree -- alist )
Binary search trees

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Vocabulary
trees

Inputs and outputs
to-keya key
treea tree
alistan array of key/value pairs


Word description
Returns an alist of the portion of this tree whose keys are strictly less than to-key.

See also
headtree>alist[], tailtree>alist(], tailtree>alist[], subtree>alist(), subtree>alist(], subtree>alist[), subtree>alist[]

Definition