for-loop Questions
5
Solved
In Python I can do this:
>>> import itertools
>>> for i, j, in itertools.product(range(3), repeat=2): print i, j
...
0 0
0 1
0 2
1 0
1 1
1 2
2 0
2 1
2 2
Is it possible to have ...
4
c++17 provides if constexpr, in which:
the value of condition must be a contextually converted constant expression of type bool. If the value is true, then statement-false is discarded (if prese...
Cymbal asked 21/2, 2018 at 18:34
2
A few weeks ago I worked with breakpoints in Rstudio. It worked as I expected: stopping at breakpoints.
However, now I need to use it again, I can't get it to work; more specifically: when I set a...
Brunell asked 27/11, 2018 at 14:57
15
Solved
I am working on a website, where I need to create a pause or delay.
So please tell me How to create pause or delay in for loop in javascript or jQuery
This is a test example
var s = document.get...
Christinachristine asked 7/4, 2012 at 22:4
7
Solved
In Delphi, consider
var
i: integer;
begin
for i := 0 to N do
begin
{ Code }
end;
One might think that i = N after the for loop, but does the Delphi compiler guarantee this? Can one make t...
10
I have a list of words:
words=["alpha","omega","up","down","over","under","purple","red","blue","green"]
I have two functions that are supposed to find the shortest and longest words in this list:...
1
Solved
The following code with callback argument runs faster in the first loop.
const fn = (length, label, callback) => {
console.time(label);
for (let i = 0; i < length; i++) {
callback &...
Mulligan asked 25/7 at 9:18
5
Solved
I am relatively new to R. I am iterating over a vector in R by using for() loop. However, based on a certain condition, I need to skip some values in the vector. The first thought that comes to min...
3
I'm trying to retrieve data from the database and render it in rows of three columns. I've tried as many methods as I could find, finally it seemed to be rendering with this code:
<div class='co...
Cecilacecile asked 26/10, 2022 at 5:34
3
Solved
I have a batch file which contains nested loop with continue-like command:
for %%i in (1, 2, 4, 8, 16, 32, 64, 128, 256) do (
for %%j in (1, 2, 4, 8, 16, 32, 64, 128, 256) do (
if %%i gtr %%j go...
Heracliteanism asked 1/4, 2016 at 11:43
5
Solved
Is there a concise way to loop over true/false in C#?
I have ~20 lines of code in a unit test I'd rather not duplicate to toggle one boolean true/false.
I could break it off into a function and c...
8
Solved
I've been writing a lot of constructs like this the past couple of days:
list = get_list()
if list:
for i in list:
pass # do something with the list
else:
pass # do something if the list was em...
6
Solved
Reading various questions here on Stack Overflow about C++ iterators and performance**, I started wondering if for(auto& elem : container) gets "expanded" by the compiler into the best pos...
Stumpy asked 30/5, 2012 at 18:2
2
Solved
I am trying to understand this clang-tidy warning: altera-id-dependent-backward-branch that seems to be triggered by this loop.
for(; first != current; ++first)
The example I have is this code, t...
Slouch asked 17/12, 2021 at 9:27
4
Solved
I have a list of URLs in a .txt file that I would like to run using selenium.
Lets say that the file name is b.txt in it contains 2 urls (precisely formatted as below):
https://www.google.com/,ht...
Azeotrope asked 15/1, 2020 at 16:22
9
Solved
Is there a way to access the iterator (I suppose there's no loop index?) in a C++11 range-based for loop?
Often we need to do something special with the first element of a container and iterate ove...
Ashlynashman asked 19/1, 2014 at 11:9
11
Solved
Why won't this function reverseArrayInPlace work?
I want to do simply what the function says—reverse the order of elements, so that the results end up in the same array arr. I am choosing to do thi...
Habakkuk asked 5/9, 2015 at 22:57
6
Solved
The JS snippet I created relies on the forloop.counter variable being available within a {% for key, value in data.items %}..{% endfor %} tag.
Is there a way to use mathematical operators (*, -, ...
Sybarite asked 20/8, 2013 at 9:30
17
Solved
You can get the same output with for and while loops:
While:
$i = 0;
while ($i <= 10){
print $i."\n";
$i++;
};
For:
for ($i = 0; $i <= 10; $i++){
print $i."\n";
}
But which one is f...
Hedgerow asked 2/9, 2010 at 16:32
9
Solved
What command I must use, to get out of the for loop, also from //code inside jump direct to //code after
//code before
for(var a in b)
{
switch(something)
{
case something:
{
//code inside
...
Sagittate asked 12/6, 2013 at 18:23
5
Solved
I'm new to stackoverflow and I have research but have not find a satisfying answer.
I understand that I can get a row index by using df.iterrows() to iterate through a df. But what if I want to ge...
Undone asked 23/5, 2018 at 9:52
7
#include <stdio.h>
#include <math.h>
double integrateF(double low, double high)
{
double low = 0;
double high = 20;
double delta_x=0;
double x, ans;
double s = 1/2*exp((-x*x)/2);
...
Grouping asked 20/10, 2013 at 3:52
2
Solved
I need to iterate a Vec including the position for each iterated element. I'm sure this is already in the API but I cannot see it.
I need something like this:
fn main() {
let v = vec![1; 10];
...
3
Solved
I would like to use some iteration control flow to simplify the following LaTeX code.
\begin{sidewaystable}
\caption{A glance of images}
\centering
\begin{tabular}{| c ||c| c| c |c| c|| c |c| ...
7
Solved
The documentation doesn't say how and the tutorial completely ignores for loops.
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