reduce traversal memory usage through iterators #209
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Previously, the traversal stack held (node, children queued) pairs. When visiting a node without it's children queued, we would queue them all. They take a lot of memory! Now, the stack holds children iterators.
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Previously, the traversal stack held (node, children queued) pairs.
When visiting a node without it's children queued, we would queue them
all. They take a lot of memory!
Now, the stack holds children iterators.