koobas.hobune.stream
Fastest, cleanest way to find common items in 2 lists
Hi Everyone,
This is a bit of a general programming question sorry. I am just learning C#, and was wondering if someone could help me with getting my head around the most efficient method for handling this with Lists.
I have a list, and I want to compare it to another list and execute some further instruction if both lists have exactly 2 items in common.
I know simple brute ways to do it, but I belief there are some list functions for this sort of thing, and I am trying to expand my capability with C#, rather than relying on old habits.
Thanks for your time
It depends if you test occurs often or not. If not, I think that two "for" loops are good enough. If you launch this test at every frame and the lists are quite long, you may think of using a hash table.
Thanks for the reply $$anonymous$$iraSensei, I am not calling it too often and decided to use Linq given it's powerful (albeit slightly slower) features. I posted an example below.
OK, I found an answer, for anyone else interested, I decided to use LINQ. To do so:
Make sure you add it to your script:
using System.Linq
Then use:
IEnumerable both = list1.Intersect(list2);
if(both.Count() == 2){
//do...
}
It is recommended not to use Linq in unity scripting to avoid garbage in the game,It is recommended not to use Linq in Unity scripting to avoid unwanted garbage in the game
