improve UncheckedCompletion

jessesquires · jessesquires · commit 62729fb7d686 · 2024-05-30T15:23:39.000-07:00
diff --git a/Sources/DiffableDataSource.swift b/Sources/DiffableDataSource.swift
@@ -22,9 +22,13 @@ struct UncheckedCompletion: @unchecked Sendable {
     let block: Block?
 
     init(_ block: Block?) {
-        self.block = {
-            dispatchPrecondition(condition: .onQueue(.main))
-            block?()
+        if let block {
+            self.block = {
+                dispatchPrecondition(condition: .onQueue(.main))
+                block()
+            }
+        } else {
+            self.block = nil
         }
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -22,9 +22,13 @@ struct UncheckedCompletion: @unchecked Sendable {`
`22`	`22`	`let block: Block?`
`23`	`23`
`24`	`24`	`init(_ block: Block?) {`
`25`		`- self.block = {`
`26`		`- dispatchPrecondition(condition: .onQueue(.main))`
`27`		`- block?()`
	`25`	`+ if let block {`
	`26`	`+ self.block = {`
	`27`	`+ dispatchPrecondition(condition: .onQueue(.main))`
	`28`	`+ block()`
	`29`	`+ }`
	`30`	`+ } else {`
	`31`	`+ self.block = nil`
`28`	`32`	`}`
`29`	`33`	`}`
`30`	`34`	`}`