Search for tag: "iterator"

Making iterator classes is hard. In this video, we show an alternative, allowing us to write the iterator as a ‘function”. This requires the addition of a new python statement, the yield…

In this video, we show how to make our own iterable and iterator classes. These are actually tightly linked, and you need one to create the other.

We are familiar with iterables, types that we can use in a for-loop. In this video we introduce the iterator. This is a type that can be used in a for-loop, but we can also manually step through the…

In this video we show that the one place we typically prefer while-loops is when we are modifying a list or other mutable iterable. While we did see how to do this with for-loops (by looping over…

We can always replace for-loops with while-loops, but should we? In this video we talk about the trade-offs of the two control structures and why it might be better to use over the other.

While-loops require additional patterns beyond the simple accumulator pattern that we used in for-loops. In this video, we talk about the first such pattern, which is replacing the range iterator.…

In this video we talk about the while-loop and explain why it is necessary. In particular, there are types of iteration that are not possible with the for-loop.