diff --git a/core/src/errors/ext.rs b/core/src/errors/ext.rs
index 62e7bbf..e783f4c 100644
--- a/core/src/errors/ext.rs
+++ b/core/src/errors/ext.rs
@@ -44,6 +44,29 @@ impl<O, E> ResultExt for Result<O, E> {
     }
 }
 
+pub trait BoolExt: Sized {
+    fn true_or<E>(self, err: E) -> Result<(), E>;
+    fn false_or<E>(self, err: E) -> Result<(), E>;
+}
+
+impl BoolExt for bool {
+    fn true_or<E>(self, err: E) -> Result<(), E> {
+        if self {
+            Ok(())
+        } else {
+            Err(err)
+        }
+    }
+
+    fn false_or<E>(self, err: E) -> Result<(), E> {
+        if self {
+            Err(err)
+        } else {
+            Ok(())
+        }
+    }
+}
+
 pub trait ErrExt: Sized {
     #[track_caller]
     fn aux(self) -> Aux