From 42f2e00f88a9b1a9c206318a5c089a1e5c07cb04 Mon Sep 17 00:00:00 2001
From: Justin Starry <justin.starry@icloud.com>
Date: Sat, 7 Dec 2019 17:17:26 -0500
Subject: [PATCH] Change callback reform to not consume self (#779)

---
 src/callback.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/callback.rs b/src/callback.rs
index 1f56dec59ea..15b1e8a17a8 100644
--- a/src/callback.rs
+++ b/src/callback.rs
@@ -46,13 +46,14 @@ impl<IN> Callback<IN> {
 impl<IN: 'static> Callback<IN> {
     /// Changes input type of the callback to another.
     /// Works like common `map` method but in an opposite direction.
-    pub fn reform<F, T>(self, func: F) -> Callback<T>
+    pub fn reform<F, T>(&self, func: F) -> Callback<T>
     where
         F: Fn(T) -> IN + 'static,
     {
+        let this = self.clone();
         let func = move |input| {
             let output = func(input);
-            self.clone().emit(output);
+            this.emit(output);
         };
         Callback::from(func)
     }