3,603 questions
-4
votes
1
answer
75
views
Rewriting nested loop with reduce [closed]
I wrote the below code to solve a prep test, found online. The goal is to find the min absolute difference between numbers in an array.
function minimumAbsoluteDifference(arr: number[]): number {
/...
- 2,234
1
vote
0
answers
32
views
NVIDIA webinar on parallel reduction gridsize
In the last example of Mark Harris' webinar I don't understand the indexing before the parallel reduction part. In "Reduction #6" the gridSize/number of dispatches was ceil[N (the size of ...
- 61
0
votes
0
answers
13
views
Flatten Date Sequence with an attached Value in Google Sheets (Without the use of Macros)
This is a similar question that was posted before but with a little expansion to the problem.
The original post was this link:
Create flatten dates sequence in Google Sheets in one column (without ...
- 1
3
votes
1
answer
76
views
OpenMP reduce on large heap array cause segment fault
When I try to reduce a large heap array with OpenMP reduction, it segment fault:
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main() {
...
- 61
0
votes
1
answer
89
views
Inject behavior when last element is used before referencing accumulator
I am a a bit confused by some of the behavior of the of the inject (alias reduce) command in Ruby
Background
For any array, the second element (referenced after the accumulator) reflects the last ...
- 13
-1
votes
2
answers
74
views
2d array - group by first item and calculate average of corresponding number
I have a 2d array which contains a list of series with title, rating, and time spent watching. For example:
let seriesList = [["Squid Game", 3.5, "4 days"], ["Squid Game",...
- 83
1
vote
2
answers
76
views
Label the row according to the source
I want to importrange from Spreadsheet OLD with several tabs/sheets into Spreadsheet NEW. What i want to do is to import values from SheetA and Sheet B.
First column: vstack(importrange(SheetA!A5:A),...
- 9
4
votes
3
answers
99
views
Why has my array element been changed by this declaration?
Javascript code:
const bigArray2 = [
[1, 2, 3],
[2, 4, 6],
[3, 6, 9],
];
//creates single-layer array containing all elements of every array within bigArray2
const combinedArray = ...
- 49
2
votes
2
answers
62
views
React transform data using reduce
I need to transform the following structure using React.
export const bodyRows = [
{
row: [{ cell: "Name" }, { cell: "Allan, Trent" }, { cell: "Smith, Nathan" }, { ...
- 95
0
votes
1
answer
29
views
App producing 2 messages for only 1 input
I'm trying to debug a problem in our production Kafka Streams app. The (simplified) topology looks something like this
builder.stream("input").groupByKey().reduce(
(agg, val) -> "...
- 1,660
3
votes
1
answer
165
views
CUB reduce_by_key
Thrust has the thrust::reduce_by_key algorithm which works well for a problem of mine. I wanted to try to use CUB for finer control of memory and streams as well as interaction with my own kernels, ...
- 116
2
votes
3
answers
130
views
Correct way to return first element of a JS array that meets condition and mapped
Let's say we have a function that makes expensive calculation and an array of source values for which we do the calculation. We want to get a first return value of the function that is not falsy and ...
- 21
-2
votes
1
answer
139
views
FlatMap vs Reduce for extracting data from a nested object
I have a dataset as such, where there may be multiple testResults array elements, along with there being 1 or many response array elements; and I an wanting to extract all of the potential ...
- 6,398
0
votes
1
answer
92
views
JQ Cannot iterate over null
I am trying to create a jq that is dynamic in returning data.
User Story: I have data with many fields and not named like I want. I want to be able to based on the data and schema transform the data.
...
- 1,020
0
votes
0
answers
69
views
Is there a way in Google Earth Engine to compute zonal stats for pixels falling to a certain extent (e.g at least 70%) into the desired area?
I have a shapefile containing fifteen circular polygons of 80 m radius. The polygons are spread all cross Europe, from Italy to France, Germany, Belgium, and Sweden.
My task is to compute the average, ...
- 13