Heapfield — Languages

When should I implement __repr__ and when __str__?

user884120321asked yesterday

fn first_word(s: String) -> &str { s.split(' ').next().unwrap() } The compiler says the borrowed value does not live long enough. I just want the first word.

Oskar Lindqvist9asked yesterday

When is async void acceptable?

Jonah Weiss3asked yesterday

I call a blocking library function inside an async def handler and the whole server stalls. How do I run it without blocking?

Priya Raghunathan9asked yesterday

for (String s : names) { if (s.isBlank()) names.remove(s); } throws ConcurrentModificationException. How should I remove while iterating?

Dmitri Vasko3asked yesterday

0.1 + 0.2 === 0.3 is false in JavaScript. Is the language broken?

user884120321asked last wk.

func main() { ch := make(chan int) ch <- 1 fmt.Println(<-ch) } Why does this deadlock?

Jonah Weiss3asked 4d ago

I have type Theme = 'light' | 'dark' and want an object that must contain a colour for every theme. How do I type it?

Lin Mei9asked last wk.

Python or JavaScript?

user884120321asked Mar '23

I have a loop that sums every element of a large std::vector<int> that is at least 128. If I sort the vector first (outside the timed region), the loop runs about five times faster: #include <algorithm> #include <chrono> #include <iostream> #include <random> #include <vector> int main() { std::vecto

Priya Raghunathan9asked Oct '13