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Angelos Chalaris
2020-09-15 16:13:06 +03:00
parent 39d3711994
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snippets/unfold.md
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@ -5,9 +5,9 @@ tags: function,list,advanced
Builds a list, using an iterator function and an initial seed value.
The iterator function accepts one argument (`seed`) and must always return a list with two elements ([`value`, `nextSeed`]) or `False` to terminate.
Use a generator function, `fn_generator`, that uses a `while` loop to call the iterator function and `yield` the `value` until it returns `False`.
Use list comprehension to return the list that is produced by the generator, using the iterator function.
- The iterator function accepts one argument (`seed`) and must always return a list with two elements ([`value`, `nextSeed`]) or `False` to terminate.
- Use a generator function, `fn_generator`, that uses a `while` loop to call the iterator function and `yield` the `value` until it returns `False`.
- Use list comprehension to return the list that is produced by the generator, using the iterator function.
```py
def unfold(fn, seed):