iterable Questions
4
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I found that:
>>> a={'x':42, 'y':3.14, 'z':7}
>>> b=a.__iter__()
>>> b.__dir__()
['__next__', ..., '__iter__', ...]
>>> b
<set_iterator object at 0x7efdd4e5a...
Anticlinal asked 7/9, 2017 at 22:43
3
Is an iterable the same as an iterator, or are they different?
It seems, from the specifications, an iterable is an object, say, obj, such that obj[Symbol.iterator] refers to a function, so that w...
Gluey asked 23/12, 2019 at 16:10
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I wrote a reduce function for Iterables and now I want to derive a generic map that can map over arbitrary Iterables. However, I have encountered an issue: Since Iterables abstract the data source,...
Joist asked 10/9, 2016 at 11:11
9
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The aim is to find groups of increasing/monotonic numbers given a list of integers. Each item in the resulting group must be of a +1 increment from the previous item
Given an input:
x = [7, 8, 9,...
Scevo asked 28/10, 2015 at 21:59
3
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I am working on a project and I would like to make one of my classes iterable. To the best of my knowledge I can do that with using metaclass.
First of all I would like to understand how metaclass...
5
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(Using Python 3.1)
I know this question has been asked many times for the general question of testing if iterator is empty; obviously, there's no neat solution to that (I guess for a reason - an i...
Fredericksburg asked 15/10, 2010 at 6:28
2
I am coming across terms Iterable and Enumerable while studying For/in and For/of loops. Objects are supposed be enumerable and we have to use For/in loop to loop over the properties of the object ...
Closer asked 4/8, 2021 at 8:32
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I'm trying to calculate rolling r-squared of regression among first column and other columns in a dataframe (first column and second, first column and third etc.) But when I try threading, it...
Spam asked 20/4, 2018 at 18:35
4
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Here's my code:
import math
print("Hey, lets solve Task 4 :)")
number1 = input("How many digits do you want to look at? ")
number2 = input("What would you like the ...
4
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Both of these interfaces define only one method
public operator fun iterator(): Iterator<T>
Documentation says Sequence is meant to be lazy. But isn't Iterable lazy too (unless backed by a...
Emirate asked 25/2, 2016 at 13:48
0
Sometimes I'd like to use the RxJS operators to manipulate an endless asynchronous iterable without buffering the values. It is easy to turn an iterable into an Observable. Are there downsides in t...
Pascale asked 5/7, 2021 at 10:48
5
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I am working on some code that needs to constantly take elements from an iterable as long as a condition based on (or related to) the previous element is true. For example, let's say I have a list ...
Phonogram asked 1/7, 2021 at 20:30
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A recent similar question (isinstance(foo, types.GeneratorType) or inspect.isgenerator(foo)?) got me curious about how to implement this generically.
It seems like a generally-useful thing to hav...
Landpoor asked 21/10, 2013 at 19:52
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Is there a scenario where the container is not iterable, according to this graph?
Polymorphous asked 11/7, 2019 at 12:52
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What are "iterable", "iterator", and "iteration" in Python? How are they defined?
See also: How to build a basic iterator?
Electrical asked 27/3, 2012 at 6:3
1
This has to do with the new Python 3.10 beta and the new match syntax.
Is there any way to check if a pattern is simply contained in an iterable? the most obvious solution, to simply put two wildca...
Opaline asked 21/5, 2021 at 12:17
7
Solved
I want to initialize a Set Implementation (HashSet) in Java with an Iterable. However, the constructor of HashSet doesn't accept Iterables, but only Collections type objects.
Is there a way to co...
2
I Just heard about Iterables from PHP 7.1 docs.
But didn't got its actual use case and neither the concept is clear for me.
so can anyone explain it with some easy example to grab it faster?
I wa...
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I am a beginner and I cannot understand the real effect of the Iterable interface.
2
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I'm using ionic 3, thus angular and typescript.
What I'm trying to achieve is to use the ngFor with a Map type.
Here is what I have:
interface IShared_Position {
lat: number;
lng: number;
time:...
Wallin asked 3/5, 2018 at 13:41
2
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I'm trying to assign a return type to the function below:
async function *sleepyNumbers() { // what TypeScript type is this?
let n = 0;
while (true) {
yield new Promise(resolve => res...
Ardie asked 14/3, 2020 at 10:35
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Is there a good, succinct/built-in way to see if all the values in an iterable are zeros? Right now I am using all() with a little list comprehension, but (to me) it seems like there should be a mo...
8
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Many Java framework classes implement Iterable, however String does not. It makes sense to iterate over characters in a String, just as one can iterate over items in a regular array.
Is there a re...
4
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As an exercise I'm trying to implement Python's str.join method in C++. I will eventually add the function as a method of the std::string class but I figure getting it to work is more of a priority...
Typal asked 17/11, 2016 at 6:1
7
Given:
x = ['w', 'e', 's', 's', 's', 'z','z', 's']
Each occurrence of s appears at the following indices:
1st: 2
2nd: 3
3rd: 4
4th: 7
If I do x.index('s') I will get the 1st index.
How do I ...
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