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Update second-iter.md #306

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9 changes: 5 additions & 4 deletions src/second-iter.md
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Alright, let's try to implement Iter. This time we won't be able to rely on
List giving us all the features we want. We'll need to roll our own. The
basic logic we want is to hold a pointer to the current node we want to yield
next. Because that node may not exist (the list is empty or we're otherwise
done iterating), we want that reference to be an Option. When we yield an
element, we want to proceed to the current node's `next` node.
basic logic we want is to hold a pointer to the current node in the list, and
every time we ask for the next element, it will return the current node’s value
and move to the next node in the list. Because that node may not exist (the list
is empty or we're otherwise done iterating), we want that reference to be an
Option. When we yield an element, we want to proceed to the current node's `next` node.

Alright, let's try that:

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