fix a typo (#4172)

the variable name should be `someIdentifier` instead of `willSet`.

1 files changed, 1 insertions, 1 deletions

diff --git a/swift.html.markdown b/swift.html.markdown
index 0e68e65f..e46dcc75 100644
--- a/swift.html.markdown
+++ b/swift.html.markdown
@@ -654,7 +654,7 @@ class Rect: Shape {
     // but still want to run code before and after getting or setting
     // a property, you can use `willSet` and `didSet`
     var identifier: String = "defaultID" {
-        // the `willSet` arg will be the variable name for the new value
+        // the `someIdentifier` arg will be the variable name for the new value
         willSet(someIdentifier) {
             print(someIdentifier)
         }