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Introduce AsReadOnlyList extension to cast arrays

This commit is contained in:
ig 2023-08-16 15:14:35 +02:00
parent ea7a13da06
commit 829732a7ba
2 changed files with 7 additions and 0 deletions
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2
csharp/Lib/Utils/ArrayExtensions.cs
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@ -13,4 +13,6 @@ public static class ArrayExtensions
Array.Fill(ts, element); Array.Fill(ts, element);
return ts; return ts;
} }
public static IReadOnlyList<T> AsReadOnlyList<T>(this T[] ts) => ts;
} }

5
csharp/Lib/Utils/EnumerableUtils.cs
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@ -277,6 +277,9 @@ public static class EnumerableUtils
public static T[] ToArray<T>(this IEnumerable<T> ts, Int32 n) public static T[] ToArray<T>(this IEnumerable<T> ts, Int32 n)
{ {
if (ts is T[] ta)
return ta;
var array = new T[n]; var array = new T[n];
var i = 0; var i = 0;
@ -296,6 +299,8 @@ public static class EnumerableUtils
return ts as T[] ?? ts.ToArray(ts.Count); return ts as T[] ?? ts.ToArray(ts.Count);
} }
public static IEnumerable<T> Concat<T>(this IEnumerable<T> ts, T last) public static IEnumerable<T> Concat<T>(this IEnumerable<T> ts, T last)
{ {
foreach (var t in ts) foreach (var t in ts)