Early Return or Return Early
Let’s first understand the concept of early return with a simple real-life example.
Imagine you like someone and decide to express your feelings too early. What usually happens? In most cases, you might face rejection immediately. While this may seem unfortunate, it saves you time and effort that you would have otherwise spent trying to impress them. Now, you can move on and explore other opportunities without unnecessary delays.
The same principle applies to programming with early return.
What is Early Return?
Early return, or "return early", is a coding practice that enhances readability and efficiency in functions and methods. It involves checking simple conditions at the beginning of a method and returning immediately if they are met. This approach eliminates unnecessary nesting and improves code clarity.
Why Use Early Return?
✅ Improves Readability – Avoids excessive indentation, making the code easier to follow.
✅ Reduces Complexity – Prevents deeply nested if-else statements.
✅ Enhances Performance – Exits early when conditions are met, saving execution time.
✅ Follows Best Practices – keeps functions clean and focused on single responsibilities.
The first code will keep the indentation. Second, it's easy to read the code. Third, for multiple conditions, it reduces the time complexity, which might be in microseconds. Reduce the chance of exception.
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