From cf5ddab4b02192dcc721da69ef67e240983a7d1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ey=C3=BCp=20Kaz=C4=B1m=20G=C3=B6ymen?=
 <eyupkazimgoymen@gmail.com>
Date: Thu, 29 Feb 2024 16:11:16 +0300
Subject: [PATCH] Update code_style_guideline.md

---
 code_style_guideline/code_style_guideline.md | 46 ++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/code_style_guideline/code_style_guideline.md b/code_style_guideline/code_style_guideline.md
index 06ff976..1dcd0cb 100644
--- a/code_style_guideline/code_style_guideline.md
+++ b/code_style_guideline/code_style_guideline.md
@@ -251,6 +251,52 @@ func write<target: OutputStream>(to target: inout target)
 func swap<Thing>(_ a: inout Thing, _ b: inout Thing)
 ```
 
+### Loops
+### 1. Where Clause
+Prefer to use where clause if it's possible.
+
+**Preferred**:
+```swift
+for item in items where item.productCount > 1 {
+    ...
+}
+```
+
+**Not Preferred**:
+```swift
+for item in items {
+    if item.productCount > 1 {
+        
+    }
+}
+```
+
+### 2. Indices
+Use .indicies property to loop over array indexes.
+
+**Preferred**:
+```swift
+for index in array.indices {
+    
+}
+```
+
+**Not Preferred**:
+```swift
+for index in 0..<array.count {
+    
+}
+```
+
+### 3. Enumarated
+Use .enumarated to loop through both index and item.
+
+```swift
+for (index, item) in array.enumarated() {
+    
+}
+```
+
 ### Language
 
 Use US English spelling to match Apple's API.