Since concatenation may not copy its arguments, the … representing the concatenation of its children, and the … A rope may contain shared subtrees, and is … If each vertex contains the length of the … operations on ropes … binary concatenation normally simply adds a root node, … [Rebalance selectively or explicitly] … [p. 1318] we allow a second kind of leaf … the string. … It may further be useful to introduce substring …
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