kotlin block function code example

Example: kotlin also

| Function | Object reference | Return value   | Is extension function                        |
|----------|------------------|----------------|----------------------------------------------|
| let      | it               | Lambda result  | Yes                                          |
| run      | this             | Lambda result  | Yes                                          |
| run      | -                | Lambda result  | No: called without the context object        |
| with     | this             | Lambda result  | No: takes the context object as an argument. |
| apply    | this             | Context object | Yes                                          |
| also     | it               | Context object | Yes                                          |