
What are iterator, iterable, and iteration? - Stack Overflow
So an iterable is an object that you can get an iterator from. An iterator is an object with a next (Python 2) or __next__ (Python 3) method. Whenever you use a for loop, or map, or a list …
Python: how to determine if an object is iterable?
Checking isinstance(obj, Iterable) detects classes that are registered as Iterable or that have an __iter__() method, but it does not detect classes that iterate with the __getitem__() method. …
What exactly does "iterable" mean in Python? Why isn't my object …
First I want to clarify, I'm NOT asking what is "iterator". This is how the term "iterable" is defined in Python's doc: iterable An object capable of returning its members one at a time.
java - What is the difference between iterator and iterable and …
Jul 28, 2011 · On the flip side, Iterable is another interface, which, if implemented by a class forces the class to be Iterable and is a target for For-Each construct. It has only one method …
python - How to build a basic iterator? - Stack Overflow
If you want to be able to iterate ctr more than once, it needs to be a non-iterator iterable, where it returns a brand new iterator each time __iter__ is invoked. Trying to mix and match (an iterator …
TypeError: 'NoneType' object is not iterable - Stack Overflow
Nov 12, 2023 · For example if data is a value returned from a function, then make sure that function returns an iterable object (such as list, numpy ndarray, pandas DataFrame etc.). If …
Transforming a Javascript iterable into an array - Stack Overflow
Transforming a Javascript iterable into an array Asked 10 years, 7 months ago Modified 11 months ago Viewed 168k times
Get the first item from an iterable that matches a condition
I would like to get the first item from a list matching a condition. It's important that the resulting method not process the entire list, which could be quite large. For example, the following fun...
python - collections.Iterable vs typing.Iterable in type annotation …
Oct 16, 2018 · The collections iterable is less likely to cause problems as a superclass. So in short, you should use the typing iterable in type annotations, but the collections iterable as a …
Get size of an Iterable in Java - Stack Overflow
Jul 22, 2012 · TL;DR: Use the utility method Iterables.size(Iterable) of the great Guava library. Of your two code snippets, you should use the first one, because the second one will remove all …