On Monday, 5 June 2023 at 13:57:20 UTC, Ki Rill wrote:
How do I generate `setX` methods for all private mutable
variables in my class? Do I need to use `__traits`?
I need this for my
[tiny-svg](https://github.com/rillki/tiny-svg) project to
generate `setX` methods for all Shapes.
Example:
```D
class Rectangle {
private immutable ...;
private Color fillColor;
private Color strokeColor;
private uint strokeWidth;
this(int x, int y) {...}
mixin(???);
// I need this:
Rectangle setFillColor(Color color) {...}
Rectangle setStrokeColor(Color color) {...}
Rectangle setStrokeWidth(uint color) {...}
}
```
Is there a reason you can't just make these fields `public`?
D supports property accessors, so you can always go back and make
them `private` later on if it turns out you need to. For example:
```d
// Before
class MyClass1
{
public int data;
}
void example1(MyClass1 c)
{
c.data = 123; // set
int n = c.data; // get
}
// After
class MyClass2
{
private int data_;
int data() { return data; }
void data(int value) { data = value; }
}
void example2(MyClass2 c)
{
// Usage is exactly the same
c.data = 123; // set
int n = c.data; // get
}
```
