I am trying to convert a list of headers from a Request (see https://developer.mozilla.org/en-US/docs/Web/API/Request/headers) object to a plain key/value object. Sadly, the following doesn’t work because the headers property is an iterator: Unusable result: Usable result but very verbose to create: I&#…
Tag: iterator
Vuejs Iterate through a ref object
I have a small problem, I get my ref object from that method And i want to use another method using that ref object : But i can’t iterate through : Is there anyway to make that work ? Thank you 🙂 Answer As the response is an object and not an array, you cannot iterate over it with forEach,
How can I Interleave / merge async iterables?
Suppose I have some async iterable objects like this: And for completeness: Now, suppose I can concat them like this: The (first 9) items yielded will be: But imagine that I do not care about the order, that a, b and c yield at different speeds, and that I want to yield as quickly as possible. How can I rewri…
hasNext() for ES6 Generator
How would I implement hasNext() method for a generator. I have tried many options like adding the generator as a return statement and yielding from the closure. Getting the first value printing it and then using the while etc, but none of them actually worked. I know I can use for of or while like How to loop…
How to iterate (keys, values) in JavaScript? [duplicate]
This question already has answers here: How do I loop through or enumerate a JavaScript object? (48 answers) Closed 12 months ago. I have a dictionary that has the format of How can I iterate through this dictionary by doing something like Answer tl;dr In ECMAScript 2017, just call Object.entries(yourObj). In…
How to iterate over a WeakMap?
A JavaScript WeakMap does not allow you to get the key, or the length or size, by design. Is it possible to nevertheless loop over entries in some way ? If not .. how does the Chrome console do this ? Answer Is it possible to nevertheless loop over entries in some way? No, as you say, the contents of