Add Section About Error Handling (#33365)

* Add Section About Error Handling

* fix: added front matter block

guide/english/swift/error-handling/index.md

@@ -0,0 +1,37 @@
+---
+title: Error Handling
+---
+
+# Error Handling
+
+You represent errors using any type that adopts the  `Error`  protocol.
+
+```Swift
+enum PrinterError: Error {
+	case outOfPaper
+	case noToner
+	case onFire
+}
+```
+Use  `throw`  to throw an error and  `throws`  to mark a function that can throw an error. If you throw an error in a function, the function returns immediately and the code that called the function handles the error.
+
+```swift
+func send(job: Int, toPrinter printerName: String) throws -> String {
+	if printerName == "Never Has Toner" {
+		throw PrinterError.noToner
+	}
+	return "Job sent"
+}
+```
+
+There are several ways to handle errors. One way is to use  `do`-`catch`. Inside the  `do`block, you mark code that can throw an error by writing  `try`  in front of it. Inside the  `catch`  block, the error is automatically given the name  `error`  unless you give it a different name.
+
+```swift
+do {
+	let printerResponse = try send(job: 1040, toPrinter: "Bi Sheng")
+	print(printerResponse)
+} catch {
+	print(error)
+}
+// Prints "Job sent"
+```