This is a safer order of assignment

jnape · jnape · commit 64ae49b2d62f · 2019-08-15T15:58:19.000-05:00
diff --git a/src/main/java/com/jnape/palatable/lambda/io/IO.java b/src/main/java/com/jnape/palatable/lambda/io/IO.java
@@ -317,9 +317,8 @@ class Ref {
             if (!ref.computed) {
                 return monitorSync(ref, io(() -> {
                     if (!ref.computed) {
-                        A a = io.unsafePerformIO();
+                        ref.value = io.unsafePerformIO();
                         ref.computed = true;
-                        ref.value = a;
                     }
                 })).flatMap(constantly(io(() -> ref.value)));
             }

Original file line number	Diff line number	Diff line change
`@@ -317,9 +317,8 @@ class Ref {`
`317`	`317`	`if (!ref.computed) {`
`318`	`318`	`return monitorSync(ref, io(() -> {`
`319`	`319`	`if (!ref.computed) {`
`320`		`- A a = io.unsafePerformIO();`
	`320`	`+ ref.value = io.unsafePerformIO();`
`321`	`321`	`ref.computed = true;`
`322`		`- ref.value = a;`
`323`	`322`	`}`
`324`	`323`	`})).flatMap(constantly(io(() -> ref.value)));`
`325`	`324`	`}`