On Sunday, 8 August 2021 at 11:36:51 UTC, FeepingCreature wrote:


You can make a field set function like so:

```
struct S
{
  private int x_;
  int x(int value) { return this.x_ = value; }
  int x() { return this.x_; }
}
```

This will then run invariants.

(boilerplate can automate that for you. https://code.dlang.org/packages/boilerplate cough self-advertisement cough)

FC,

Thanks! This is exactly what I had hoped might be possible!

I had made some naive "newbie-D" attempts at something like this
be couldn't get anything to work.  Thanks for providing an exable
of the exact code that would work.  Much obliged!

Best Regards,
James

PS Even more important than solving my immediate problem, I have
gained a better understanding of the struct and its member functions.



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