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-rw-r--r--object.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/object.c b/object.c
index 87e9608..3dc9936 100644
--- a/object.c
+++ b/object.c
@@ -2459,6 +2459,19 @@ rb_mod_cvar_defined(VALUE obj, VALUE iv)
return rb_cvar_defined(obj, id);
}
+/*
+ * call-seq:
+ * mod.singleton_class? -> true or false
+ *
+ * Returns <code>true</code> if <i>mod</i> is a singleton class or
+ * <code>false</code> if it is an ordinary class or module.
+ *
+ * class C
+ * end
+ * C.singleton_class? #=> false
+ * C.singleton_class.singleton_class? #=> true
+ */
+
static VALUE
rb_mod_singleton_p(VALUE klass)
{