1 files changed, 12 insertions, 0 deletions
diff --git a/Map/Extensions/Binding+unwrap.swift b/Map/Extensions/Binding+unwrap.swift
new file mode 100644
index 0000000..3498cc3
--- /dev/null
+++ b/Map/Extensions/Binding+unwrap.swift
@@ -0,0 +1,12 @@
+import SwiftUI
+
+extension Binding {
+    init(_ source: Binding<Value?>, _ defaultValue: Value) {
+        // Ensure a non-nil value in `source`.
+        if source.wrappedValue == nil {
+            source.wrappedValue = defaultValue
+        }
+        // Unsafe unwrap because *we* know it's non-nil now.
+        self.init(source)!
+    }
+}