Heapfield

[1, 2, 10].sort() // [1, 10, 2] Is this a bug?

user884120321asked yesterday

I opened a file in vim by accident. How do I quit and discard changes?

user884120321asked yesterday

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

for f in $(ls *.txt) breaks on file names with spaces. What is the right way?

user884120321asked yesterday

When is async void acceptable?

Jonah Weiss3asked yesterday

I committed the wrong files and have not pushed yet. How do I undo the last commit but keep my changes?

user884120321asked yesterday

Joining a 2 GB fact table with a 5 MB lookup table causes a full shuffle. Any way to avoid it?

Amara Nwosu9asked yesterday

With modern compilers and -O2, is volatile still required for hardware registers, or are memory barriers enough?

Oskar Lindqvist9asked 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

My useEffect with an empty dependency array fires twice on mount, so my analytics event is sent twice. Is my component mounting twice?

Amara Nwosu9asked yesterday

I have a grid with grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)). When the last row has fewer items they keep their column width. I want them to stretch across the remaining space. Possible with grid alone?

Lin Mei9asked yesterday

kubectl logs for my pod returns nothing and the pod restarts every few seconds. How can I see why it crashes?

Oskar Lindqvist9asked 2d ago

FROM node:22-alpine WORKDIR /app COPY . . RUN npm ci CMD npm start & docker run returns right away and docker ps shows nothing. Logs are empty.

Priya Raghunathan9asked yesterday

For each customer_id I need the most recent order from orders(id, customer_id, created_at, total).

Tomás Ferreira6asked 3d ago

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

Dmitri Vasko3asked yesterday

This query takes ~4 s on a 30M-row table even though created_at has a B-tree index: SELECT * FROM events WHERE date(created_at) = '2026-10-01'; EXPLAIN shows a sequential scan. Why is the index ignored?

Tomás Ferreira6asked last wk.

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.

I need a regular expression that accepts #fff and #1a2b3c but not #12 or #ggg.

Amara Nwosu9asked 2w ago

::-webkit-scrollbar does nothing in Firefox. Is there an alternative?

Lin Mei9asked Sep 4

What is the modern way to centre a box inside its parent both ways?

user884120321asked Sep '25

Python or JavaScript?

user884120321asked Mar '23

I have a DataFrame of orders and want only the rows where status is "shipped" and total is above 100. In SQL: SELECT * FROM orders WHERE status = 'shipped' AND total > 100; What is the idiomatic pandas equivalent?

Amara Nwosu9asked Oct '17

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