From 9e16d84f9e9c6e0c38763ea07b1c5d385100467e Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Wed, 29 Nov 2017 19:53:28 +0100
Subject: [PATCH] Reintroduce isStruct, isClass and isInterface

since they can be useful for generic programming.
---
 source/tanya/meta/trait.d | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/source/tanya/meta/trait.d b/source/tanya/meta/trait.d
index f5d6494..b0b5922 100644
--- a/source/tanya/meta/trait.d
+++ b/source/tanya/meta/trait.d
@@ -275,13 +275,37 @@ enum bool isTemplate(alias T) = __traits(isTemplate, T);
     static assert(!isTemplate!(S!int));
 }
 
-deprecated("Use is(T == interface) instead")
+/**
+ * Tests whether $(D_PARAM T) is an interface.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is an interface,
+ *          $(D_KEYWORD false) otherwise.
+ */
 enum bool isInterface(T) = is(T == interface);
 
-deprecated("Use is(T == class) instead")
+/**
+ * Tests whether $(D_PARAM T) is a class.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a class,
+ *          $(D_KEYWORD false) otherwise.
+ */
 enum bool isClass(T) = is(T == class);
 
-deprecated("Use is(T == struct) instead")
+/**
+ * Tests whether $(D_PARAM T) is a struct.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a struct,
+ *          $(D_KEYWORD false) otherwise.
+ */
 enum bool isStruct(T) = is(T == struct);
 
 /**