          | Lecture 4 - Page 18 : 34 |
| Functional Programming in Scheme Higher-order Functions |
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| Zipping |
Two equally long lists can be pair wise composed to a single list by means of zipping them |
 | Zipping two lists with the function z. The head of the resulting list is (z e i f i), where the element e i comes from the first list, and f i comes from the other. |