All Questions
232 questions
0
votes
2
answers
124
views
For a custom Mapping class that returns self as iterator, list() returns empty. How do I fix it?
The following is a simplified version of what I am trying to do (the actual implementation has a number of nuances):
from __future__ import annotations
from collections.abc import MutableMapping
...
- 293
1
vote
3
answers
135
views
Using tidyverse to loop or iterate my dataframe to replace all values before the a first specific value and after a specific value
I'm working with psychological tests composed of 10 gradually increasing items. Scores can be 0 (wrong), 1 (almost correct), or 2 (correct answer). So, question 2 is harder than question 1. Question 3 ...
- 1,584
1
vote
1
answer
462
views
What are the main ways to do a reverse iteration in Nim?
I'm learning Python. I recently learned about Nim and began to study it too. I liked the python+pascal syntax and the speed of C. Unfortunately, there is much less educational information and ...
- 13
0
votes
1
answer
100
views
How to iterate backwards with a custom iterator in Java using permutations
I am trying to create a a class of Permutation that extends Iterator and adds two methods: previous() and hasPrevious().
It must offer a constructor with one argument: a string containing the ordered ...
- 62
0
votes
1
answer
523
views
kdb/Q How to iterate on a function x number of times?
I'm new to kdb/Q, what is the equivalent of iteration, where I need to run a function 10 times?
In Python, it would be something like creating some kind of iterator, using a while loop to run the ...
- 23
0
votes
4
answers
2k
views
TestDome - Malware Analysis in C++
I'm practicing this problem on TestDome, and I found myself stuck with the final step of the malware process, namely, replacing the correct position with a value of 0. My program accurately prints out ...
- 31
1
vote
1
answer
65
views
creating a function looping through multiple subsets and then grouping and summing those combinations of subsets
I am attempting to build a function that processes data and subsets across two combinations of dimensions, grouping on a status label and sums on price creating a single row dataframe with the ...
- 373
0
votes
1
answer
58
views
Looping through combinations of subsets of data for processing
I am processing sales data, sub-setting across a combination of two distinct dimensions.
The first is a category as indicated by each of these three indicators ['RA','DS','TP']. There are more ...
- 373
0
votes
1
answer
233
views
KDB+ Q Create a looping/iteration id column
I have a kdb/q question I would like some help with. Please see the table below
`A B Run
99 newcol Start
99 newcol Start
99 newcol Start
99 newcol During
99 newcol During
99 newcol End
...
user21142340
0
votes
2
answers
170
views
Iterate over multiple elements at once Python [duplicate]
If I have a list like l=[1,2,3,4,5,6]. If I do something like:
for i in l:
print(i)
It will print all element separately.
1
2
3
4
.
.
.
Is there a way to iterate simultaneously over multiple ...
- 1,855
0
votes
0
answers
43
views
how to iterate over firestore document id in flutter
I have returned all the IDs of my firestore documents, and now I need to get the index of each one.
Until now I get an error: "Spread elements in a list or set literals must implement 'Iterable' &...
- 595
2
votes
3
answers
77
views
If True: turn following values to True in list of booleans until nth position after True is reached
I have a list of booleans
l = [False, False, False, True, False, False, False]
that I want to turn into
l_new = [False, False, False, True, True, True, False]
That means, whenever there is a True in ...
- 124
3
votes
1
answer
783
views
Kotlin: loop through finite values returned by a next function
Background info
A common pattern in some programming languages is to have a function that when called, returns the next value until the end of the finite sequence is reached, in which case it keeps ...
- 5,361
1
vote
2
answers
47
views
Iterate through a function until exact value or certain range is reached
I have a function that takes gross income as input and gives me the net income as output:
gross_net <- function(gross_income,
social_security = 0.2,
tax =...
- 159
0
votes
0
answers
31
views
How to iterate over a dataframe that's processed in another function? [duplicate]
I want to use the reactome2py package to analyse pathways by adapting the Reference code.
I want to iterate over the dataframe (e.g., df for data_linear_cna.txt).
Reference code:
https://colab....
- 1,545