add toHash snippet

Author: WebFreak001

source/workspaced/com/snippets/plain.d

@@ -207,6 +207,22 @@ static immutable PlainSnippet[] plainSnippets = [
 		"Equality operators in form of `this == other` or `other == this` and also used for `!=`.\n\n"
 			~ "Reference: [https://dlang.org/spec/operatoroverloading.html#equals]"
 	),
+	PlainSnippet(
+		[SnippetLevel.type],
+		"toHash",
+		"size_t toHash() in struct",
+		"size_t toHash() const @safe pure nothrow {\n\t$0\n}",
+		"Hash generation for associative arrays.\n\n"
+			~ "Reference: [https://dlang.org/spec/hash-map.html#using_classes_as_key]"
+	),
+	PlainSnippet(
+		[SnippetLevel.type],
+		"toHashClass",
+		"size_t toHash() in class",
+		"override size_t toHash() @safe nothrow {\n\t$0\n}",
+		"Hash generation for associative arrays.\n\n"
+			~ "Reference: [https://dlang.org/spec/hash-map.html#using_struct_as_key]"
+	),
 	PlainSnippet(
 		[SnippetLevel.type],
 		"opCmp",