Performance of for loop vs foreach

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C#

C#4.0

Hi,

Which has better performance for or foreach ?

Thanks in Advance.

Posted 8-Nov-11 1:51am

Aditya Magotra

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3 solutions

Solution 1

You're a programmer. Write an app that uses each of the methods in question and see for yourself. Alternatively, you can just google it.

Posted 8-Nov-11 1:54am

#realJSOP

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Pascal Ganaye · Accepted Answer · 2011-11-08T02:01:00

foreach wil be creating a new object and there is a cost associated with this.
Some enumerators will check if the solution is changed and there are also a cost for it.
This said, don't fall to quick into this trap. I had a student once who decided to change all the foreach( into a for(int x=1;....
It made the code harder to read and the benefit was not noticeable.

The secret of performance tweaking is to first identify which bits are slow.
Then and only then you can act on these bits and leave the rest undisturbed.

koolprasad2003 · Accepted Answer · 2011-11-08T02:05:00

Solution 3

FOREACH Vs. FOR (C#)[^]

For-vs-ForEach-performance/[^]

Posted 8-Nov-11 2:05am

koolprasad2003

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[no name] 8-Nov-11 23:12pm

Thanks for the valuable links.