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Performance is a subset of Optimization: performance is the goal when you want the execution time of your program or routine to be optimal.
12
votes
Accepted
Checking for duplicate materials
Performance
The performance of your code is \$O(n^2)\$: For each additional item in allMat, the unique collection will be iterated one time. … Enumerable.Empty<IEnumerable<Material>>())
.SelectMany(m => m).ToArray();
I put this in a Unit Test to measure the performance for 20,000 random materials:
[TestMethod]
public void TestMaterials …