Книга: Learning Concurrency in Python
Назад: Filter example
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Breaking it down

In the preceding code example, we first defined our source using the Observable.from_ function, passing in an array of five letters of the Greek alphabet into it.

We then went on to map the lengths of these strings into a lengths variable using source.map and provided a lambda function that transforms our string into it's length.

Then, we went on to filter these lengths using a lambda function that returns only those values that match the greater than or equal to five criteria.

Finally, we subscribed to this filtered stream of events using a final lambda function that merely prints out the received lengths of each string.

Назад: Filter example
Дальше: Chained operators

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