Update syntax-if-statements-initializers.md

docs/syntax-if-statements-initializers.md

@@ -10,6 +10,46 @@ Initializers can improve code clarity and reduce scope pollution by allowing dev
 
 The reduced scope pollution improves register space in extreme cases (or auto-generated code) where developers have many variables defined and have to work around register limits by reducing the register size. In some scenarios, especially on Roblox, initializing variables within if statements can lead to improved performance and reduced complexity by avoiding unnecessary calls by developers. ⁤ A common paradigm used by Roblox developers is to use `Instance:FindFirstChild` in their condition and then access it afterwards instead of keeping an existing variable around in the new scope, polluting the existing scope. 
 
+Another benefit provided by initializers is being able to compact verbose guard clauses into a singular if statement.   
+
+Example:
+
+```lua
+function PlayerControl:GetEntities()
+    if self.RemovedSelf then
+        return self.Instances
+    end
+
+    local entity = self:TryGetEntity()
+    if entity == nil then
+        return self.Instances
+    end
+
+    local index = table.find(self.Instances, entity.Root)
+    if index == nil then
+        return self.Instances
+    end
+
+    table.remove(self.Instances, index)
+    self.RemovedSelf = true
+
+    return self.Instances
+end
+```
+
+```lua
+function PlayerControl:GetEntities()
+    if self.RemovedSelf then
+    elseif local entity = self:TryGetEntity() where entity == nil then
+    elseif local index = table.find(self.Instances, entity.Root) then
+        table.remove(self.Instances, index)
+        self.RemovedSelf = true
+    end
+
+    return self.Instances
+end
+```
+
 # Design
 
 If statements with initializers must match (following the Luau grammar) `'if' 'local' bindinglist ['=' explist] 'then'` and `'local' bindinglist ['=' explist] where exp 'then'` syntax. The variables declared by an initializer are only available to the if statement's blocks; any code after the if statement won't have the variables defined.