Simplify RefCell minimum_spanning_tree example #61029
Merged
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This simplifies the implementation of the
minimum_spanning_tree
example ofRefCell
in thecell
module-level docs, avoiding an unnecessary recursive call. This also eliminates the need for a block to contain the scope of the borrow in this example. But since that use of a block served an important didactic purpose, we make up for this by instead introducing a block in the initial, simpler example ofRefCell
, where the point will hopefully be conveyed to the reader more easily.