Reduce Allocations in ValidateSignature #2586
Merged
+6
−44
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When we need to create an enumerable with a single element in it, we are allocating a
new List<SecurityKey> { key }
. This allocates both the list, and then allocates a 4 element array backing the list (because this syntax is C# sugar for just calling Add on the collection).Instead, use a collection expression which optimizes the single element case.
There was one method in Saml that had this pattern in it, but was unused. I opted to remove it. Please let me know if it should be preserved for some reason.
Using an internal benchmark with 1,000 iterations, these allocations will be cut in half: