On Sunday, 3 April 2022 at 14:29:22 UTC, Paul Backus wrote:
On Sunday, 3 April 2022 at 13:50:28 UTC, Salih Dincer wrote:
Hi all,
Do you have a good example of how const variables actually
work?
So I'm not talking about system resources and programming
errors. I want to say it's good. Because if everything works
without it, why does it exist?
This is covered in the const FAQ:
https://dlang.org/articles/const-faq.html
The programs I write are not multithreaded. Also, I don't work
as a team. Thanks for the link but there is only the following
example:
```d
struct Foo
{
mutable int len;
mutable bool len_done;
const char* str;
int length()
{
if (!len_done)
{
len = strlen(str);
len_done = true;
}
return len;
}
this(char* str) { this.str = str; }
}
const Foo f = Foo("hello");
bar(f.length);
```
Moreover, I did not understand anything from the example in the
article :)
SDB@79
