Linked Questions
13 questions linked to/from Clean readable code vs fast hard to read code. When to cross the line?
3
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0
answers
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Argument over performance using Convert.ChangeType in Web Applications [duplicate]
A debate has been going on at work about using Convert.ChangeType.
A couple of fundamental assumptions to this discussion are delineated below:
1. The discussion is within the context of web ...
- 541
63
votes
17
answers
38k
views
Why use an OO approach instead of a giant "switch" statement?
I am working in a .Net, C# shop and I have a coworker that keeps insisting that we should use giant Switch statements in our code with lots of "Cases" rather than more object oriented approaches. His ...
- 2,135
30
votes
6
answers
22k
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In general, is it worth using virtual functions to avoid branching?
There seems to be rough equivalents of instructions to equate to the cost of a branch miss virtual functions have a similar tradeoff:
instruction vs. data cache miss
optimization barrier
If you ...
- 424
8
votes
6
answers
2k
views
performance versus reusability
How can I write functions that are reusable without sacrificing performance? I am repeatedly coming up against the situation where I want to write a function in a way that makes it reusable (e.g. it ...
- 189
12
votes
4
answers
921
views
How to document and teach others "optimized beyond recognition" computationally intensive code?
Occasionally there is the 1% of code that is computationally intensive enough that needs the heaviest kind of low-level optimization. Examples are video processing, image processing, and all kinds of ...
- 17.2k
3
votes
6
answers
888
views
Is it better to write an efficient algorithm or code that is easier to understand?
So I was recently given a coding assignment from a large financial firm, and I thought of two ways to solve the problem. One of the ways involved 1 outer for loop and 1 inner for loop. In this case, ...
- 89
3
votes
2
answers
372
views
Place variables frequently used by the same function on the heap?
Say that I have the following situation:
void myFunc()
{
int x;
//Do something with x
}
"x" is placed on the stack which is no doubt fast.
Now, "myFunc" is called very frequently, lets say ...
- 159
1
vote
5
answers
1k
views
Avoiding exceptions for performance optimization
In our code base, I see a lot of code like this
var error = ValidatePhoneNumber(userId, phoneNumber);
//if validation fails, return error
if(!string.IsNullOrEmpty(error))
{
return error;
}
If I ...
1
vote
2
answers
839
views
How to declare and share a lot of variables to provide best performance
My question is not about dilemma between clean code vs performance, but I want to understand exact issue with declaring variables and sharing them between functions.
I read in many threads, that from ...
- 123
2
votes
1
answer
485
views
How to balance 'efficient' vs 'clean' code? [closed]
I have been coding in python for a little over a year, and I have learned a lot and developed quite a few applications, in the process.
I do not program for my profession, I simply program ...
- 139
-1
votes
2
answers
437
views
conciseness to speed ratio [closed]
In general, the more concise & flexible a language is the slower is the execution of programs written in this language. on the other side, the fast languages are mostly overly verbose, requiring ...
- 115
-3
votes
2
answers
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What is well written code? [closed]
Is code that runs fast but written with a bad and hard to understand syntax, good code?
Is code that runs slowly but written with a good and easy to understand syntax, good code?
- 105
-1
votes
1
answer
176
views
Drawing the Line between Coding Style and Algorithm [closed]
Formatting with Indentations, White spaces, and New Lines obviously fit into the coding style category.
if (a == b) {
foo();
}
// vs
if (a == b)
{
foo();
}
On the other hand, something that ...
- 163