Questions tagged [loops]
A **loop** is a sequence of statements which is specified once but which may be carried out several times in succession.
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Efficient way to skip ticks/frames in a loop?
So:
main does a loop, and every iteration it increments a tick by one
For example, say it were in python because that's easy to write:
def main():
tick = 0
while True:
tick += 1
...
- 309
7
votes
3
answers
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Communication between microservices - distinguishing internal calls safely
I am rearchitecturing and rewriting my monolithic BaaS solution into microservices regarding to scalability and single responsibility rules. Due to the internal dependencies, services are placed on ...
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Java: Why's this For-Loop thousands of times slower?
So I have a simple method I'm calling millions of times a second, and I noticed that it was taking 16% of all processing time!!
The offensive routine is as follows:
public void placeHolder(){
...
15
votes
7
answers
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Should <= and >= be avoided when using integers, such as in a For loop? [closed]
I have explained to my students that equal-to testing is not reliable for float variables, but is fine for integers. The textbook I am using said that it is easier to read > and < than >= and <=....
user186205
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Nested For Loops JavaScript
I have an app which gets data from the database (MongoDB) in JSON format. The returned data contains nested arrays and I want to access the values in the nested arrays. The returned JSON format looks ...
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printing in methods vs printing in the main/driver class
I'm fairly new to programming and am currently creating a blackjack game in Java.
I've progressed quite well, although could use some pointers with regards to the best way to implement a method.
At ...
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0
votes
2
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Do some built-in functions loop behind the scenes?
I mostly code in C# & VB, but I think this question is pretty universal. I try to limit loops to increase performance. For instance, string functions that split the string into an array, or do a ...
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Load to list in one loop and then process list in another or do it all at once
I have a dataset full of rows that I must initialize into myclass and then process.
I am currently looping through each row in the dataset, initializing a new instance of myclass, then adding that ...
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Best way to handle variables used in a for loop? [duplicate]
From previous experience, I had always thought that, if you are going to use variables inside of a for loop, it was much better to declare them outside of the loop vs. inside the loop itself. I ...
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At what point is it taboo to have loops within loops?
Just curious. The most I have ever had was a for loop within a for loop, because after reading this from Linus Torvalds:
Tabs are 8 characters, and thus indentations are also 8 characters.
There ...
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Filtering foreach loops with a where condition vs continue guard clauses
I've seen some programmers use this:
foreach (var item in items)
{
if (item.Field != null)
continue;
if (item.State != ItemStates.Deleted)
continue;
// code
}
instead ...
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Is there anything that can be done with recursion that can't be done with loops?
There are times where using recursion is better than using a loop, and times where using a loop is better than using recursion. Choosing the "right" one can save resources and/or result in fewer lines ...
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eradicating the array = loop mindset [closed]
I have noticed a common issue in code reviews, that takes this form:
// "arr" is an array
for (i = 0; i < arr.length; ++i) {
if (i == 3) {
// do something with arr[i]
}
if (i ==...
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Is using for loop syntax for a "with(variable)" block an anti-pattern?
I fooled around with for-loops, remembered the with keyword from delphi and came up with following pattern (defined as a live template in IntelliJ IDEA):
for ($TYPE$ $VAR$ = $VALUE$; $VAR$ != null; $...
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Did labelled loops pre-date for loops?
Was the first implementation of looping control flow effectively the goto (or something like a labelled JMP in assembler) or was there another syntactic construction?
for (für) was introduced in ...
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