Pre-size List in TryGetPortableFrameworks to avoid array resize allocations (#7095)

nareshjo · web-flow · commit d8f2f0950b85 · 2026-02-07T09:52:24.000+10:30
diff --git a/src/NuGet.Core/NuGet.Frameworks/FrameworkNameProvider.cs b/src/NuGet.Core/NuGet.Frameworks/FrameworkNameProvider.cs
@@ -500,7 +500,7 @@ public bool TryGetPortableFrameworks(string shortPortableProfiles, [NotNullWhen(
 
             var shortNames = shortPortableProfiles.Split(new char[] { '+' }, StringSplitOptions.RemoveEmptyEntries);
 
-            var result = new List<NuGetFramework>();
+            var result = new List<NuGetFramework>(shortNames.Length);
             foreach (var name in shortNames)
             {
                 var framework = NuGetFramework.Parse(name, this);

Original file line number	Diff line number	Diff line change
`@@ -500,7 +500,7 @@ public bool TryGetPortableFrameworks(string shortPortableProfiles, [NotNullWhen(`
`500`	`500`
`501`	`501`	`var shortNames = shortPortableProfiles.Split(new char[] { '+' }, StringSplitOptions.RemoveEmptyEntries);`
`502`	`502`
`503`		`- var result = new List<NuGetFramework>();`
	`503`	`+ var result = new List<NuGetFramework>(shortNames.Length);`
`504`	`504`	`foreach (var name in shortNames)`
`505`	`505`	`{`
`506`	`506`	`var framework = NuGetFramework.Parse(name, this);`