What is return type declarations?

What is return type declarations?

Return type declaration is specifying the expected data types of the result that a function or a class method should return. Due to return type declaration, PHP, for example, can convert the integer result into a string before returning the result of the function.

What is the type () function returns?

The result of a function is called its return value and the data type of the return value is called the return type. When a function does not return a value, void is the type specifier in the function declaration and definition.

What data type is return?

A return is a value that a function returns to the calling script or function when it completes its task. A return value can be any one of the four variable types: handle, integer, object, or string.

How do I specify a return type of function in TypeScript?

TypeScript – Returning a Function

1. The return_type can be any valid data type.
2. A returning function must end with a return statement.
3. A function can return at the most one value.
4. The data type of the value returned must match the return type of the function.

What’s new in php7?

PHP 7 has now added Scalar type declaration for int, float, string, and boolean. Adding scalar type declaration and enabling strict requirements ensures that more correct and well-documented PHP programs can be written. It also helps you in gaining more control over your code and make the code easier to read.

What is a return type in Java?

A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing).

Is void a return type in Java?

Any method declared void doesn’t return a value. In such a case, a return statement can be used to branch out of a control flow block and exit the method and is simply used like this: return; If you try to return a value from a method that is declared void , you will get a compiler error.