shorter alternative of constructor with parameter

[bearophile via Digitalmars-d]

Jonathan M Davis:

> Agreed. This would just add more stuff to the language that 
> people would have to understand,

Now there are languages with such idea, like TypeScript and 
Scala, so I think programmers can grasp this simple idea quickly.


> and it really doesn't add much benefit. It's just a slightly 
> terser syntax -

It's a more dry syntax, it saves typing, reduces the noise, and 
makes the code less bug-prone because it's more DRY, you have to 
repeat similar things less times. So I think it's a good idea for 
D.

It also partially replaces my idea of giving a warning/error when 
you have arguments equal to field names, because it removes a 
source for a common bug (this code compiles with no errors nor 
warnings and shows a different but related bug):

struct Foo {
     int x;
     this(in int x_) {
         x = x;
     }
}
void main() {}

Bye,
bearophile