Daniel,
-1. In my personal experience this happens very rarely, not worth a special
support in the language by far. Almost all similar cases for me are covered by
simple
def foo() {
... ...
bar()?:defaultValue
}
and the cases where this is not adequate, either due a non-null false return
value which should be returned instead of the default, or due to a non-trivial
code needed at //! below, in my code almost never happen.
Contrariwise, if you are about to improve the language for simplicity and
easiness of returns, you definitely should consider allowing returning void
from a void method — this should be a completely valid code (as is e.g., in C):
void foo() { ... }
void bar() {
return foo()
}
As always, of course, YMMV.
All the best,
OC
> On 25 Jul 2020, at 20:55, Daniel Sun <sun...@apache.org> wrote:
>
> Hi all,
>
> We always have to check the returning value, if it match some condition,
> return it. How about simplifying it? Let's see an example:
>
> ```
> def m() {
> def r = callSomeMethod()
> if (null != r) return r
> //!
> return theDefaultResult
> }
> ```
>
> How about simplifying the above code as follows:
> ```
> def m() {
> return? callSomeMethod()
//!
> return theDefaultResult
> }
> ```
>
> Futhermore, we could make the conditional return more general:
> ```
> def m() {
> return(r -> r != null) callSomeMethod() // we could do more checking, e.g.
> r > 10
> return theDefaultResult
> }
> ```
>
> Any thoughts?
>
> Cheers,
> Daniel Sun
