Safer binary reading (or writing) code

[Joel]

On Tuesday, 12 December 2023 at 09:43:39 UTC, Joel wrote:
> I've got this mixin thing, I think it's less typo-prone. I 
> haven't been able to make it show the variable's name, though. 
> Also, it should be optional whether it prints anything, (it's 
> not hard for me to do that though).
>
> ```d
> // mixin(jread("width")); -> fread(&width, 1, width.sizeof, 
> bfile);
> auto jread(string var) => `fread(&`~var~`, 1, `~var~`.sizeof, 
> bfile); writeln("read var=", `~var~`);`;
> ```

O, got  it:
```d
auto jread(string var) => `fread(&`~var~`, 1, `~var~`.sizeof, 
bfile); writeln("read `~var~`=", `~var~`);`;
```