Python's yield implemented for Rust.
fn to_html_stream<'a>(xs: impl IntoIterator<Item = &'a str>) -> impl Iterator<Item = &'a str> {
fake_yield! {{
_yield!("<ul>\n");
for x in xs {
_yield!("<li>");
_yield!(x); // Don't try this at home
_yield!("</li>\n");
}
_yield!("</ul>");
}}
}This is very much work-in-progress:
- Other kinds of loops don't work.
- If you use
breakorcontinue, weird things will happen.
Check tests/ for more examples.
Probably affects performance.