What is the most basic definition of “iterable”, “iterator” and “iteration” in Python? I have read multiple definitions but I am unable to identify the exact meaning as it still won’t sink in. Can someone please help me with the 3 definitions in layman terms? 18 s 18 Iteration is a general term for taking … Read more
I am looking for a concise way to convert an Iterator to a Stream or more specifically to “view” the iterator as a stream. For performance reason, I would like to avoid a copy of the iterator in a new list: Iterator<String> sourceIterator = Arrays.asList(“A”, “B”, “C”).iterator(); Collection<String> copyList = new ArrayList<String>(); sourceIterator.forEachRemaining(copyList::add); Stream<String> targetStream … Read more
This question already has answers here: How do I loop through or enumerate a JavaScript object? (44 answers) Closed 2 months ago. I have a dictionary that has the format of dictionary = {0: {object}, 1:{object}, 2:{object}} How can I iterate through this dictionary by doing something like for ((key, value) in dictionary) { //Do … Read more
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are the iterator invalidation rules for C++ containers? (Note: This Q&A is an entry in Stack Overflow’s C++ FAQ. Meta-discussion about the question itself should be posted on the Meta question … Read more
How would one create an iterative function (or iterator object) in python? 10 s 10 Iterator objects in python conform to the iterator protocol, which basically means they provide two methods: __iter__() and __next__(). The __iter__ returns the iterator object and is implicitly called at the start of loops. The __next__() method returns the next … Read more
This question already has answers here: Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a loop (30 answers) Closed 7 years ago. In Java, is it legal to call remove on a collection when iterating through the collection using a foreach loop? For instance: List<String> names = …. for (String name : names) … Read more
What is the difference between iterators and generators? Some examples for when you would use each case would be helpful. 13 s 13 iterator is a more general concept: any object whose class has a __next__ method (next in Python 2) and an __iter__ method that does return self. Every generator is an iterator, but … Read more
I need to iterate through all .asm files inside a given directory and do some actions on them. How can this be done in a efficient way? 9 s 9 Python 3.6 version of the above answer, using os – assuming that you have the directory path as a str object in a variable called … Read more
I have two iterables in Python, and I want to go over them in pairs: foo = (1, 2, 3) bar = (4, 5, 6) for (f, b) in some_iterator(foo, bar): print(“f: “, f, “; b: “, b) It should result in: f: 1; b: 4 f: 2; b: 5 f: 3; b: 6 One … Read more
How to avoid “ConcurrentModificationException” while removing elements from `ArrayList` while iterating it? [duplicate]
