- Aswin Barath
Let me start with a fact: Every function returns a value when called.
Well, I don't know about you, but I was surprised to know about it in the first place!
Let's see an example to prove my point:
Welcome to my blog post None
Did you see that? When I called the function, it has returned the special type
None. The variable
post stores it and prints it out in the second line.
Now, we can explicitly return a value from a function by using the
- The return statement includes a
returnkeyword followed by an expression.
- An expression is a set of conditions which produces a value.
- So, the return statement can contain an expression or an explicit value to be returned.
- A return statement also ends the function execution. This means that any statements inside a function following the return statement will not be executed.
- Take a note that return statement cannot be used outside a function.
Let's code a few examples:
1) Single return statement
As you can see in this example, we have given an expression which returns the product of given two numbers.
2) Multiple return statements
21 3.14 Try again!
Here, an explicit value is specified in multiple return statements.
3) return statement with multiple values
(21, 63, 210)
This example returns dynamic values in a tuple based on the given argument.