In the Fold page, it mentions how similar it is to Iterator::map but is more flexible. It should also mention Iterator::scan which allows carrying state forward across iterations, solving the earlier nodes can affect the operation on later nodes use case. In fact, a folder as described might make a good state object to carry through a scan.
I wonder if this pattern could be renamed to Scanner or something, since as mentioned in #54 the name Fold is mixed up with other programming concepts right next door to it.
In the Fold page, it mentions how similar it is to
Iterator::mapbut is more flexible. It should also mentionIterator::scanwhich allows carrying state forward across iterations, solving theearlier nodes can affect the operation on later nodesuse case. In fact, a folder as described might make a good state object to carry through a scan.I wonder if this pattern could be renamed to
Scanneror something, since as mentioned in #54 the name Fold is mixed up with other programming concepts right next door to it.