Initial commit

PkmnLib.Static/Utils/StringKey.cs

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+using System;
+
+namespace PkmnLib.Static.Utils;
+
+/// <summary>
+/// A case-insensitive string key. We use this class for things like looking up data from dictionaries, etc.
+/// </summary>
+/// <remarks>
+/// This is a struct, as it's effectively just a wrapper around a single reference object. Heap allocation would be silly.  
+/// </remarks>
+public readonly record struct StringKey
+{
+    private readonly string _key;
+
+    public StringKey(string key)
+    {
+        _key = key;
+    }
+
+    public static implicit operator string(StringKey key) => key._key;
+    public static implicit operator StringKey(string key) => new(key);
+
+    public override string ToString() => _key.ToLowerInvariant();
+
+    public bool Equals(StringKey other)
+    {
+        return string.Equals(_key, other._key, StringComparison.InvariantCultureIgnoreCase);
+    }
+
+    public override int GetHashCode()
+    {
+        return StringComparer.InvariantCultureIgnoreCase.GetHashCode(_key);
+    }
+
+}