try_collect without the collect | Rust Programming Language Community | Page 1

#

https://github.com/rust-lang/rust/issues/94047 kinda like the try_collect feature but for iterators

GitHub

Tracking Issue for `Iterator::try_collect` · Issue #94047 · rust-la...

Feature gate: #![feature(iterator_try_collect)] This is a tracking issue for adding the try_collect() method to the Iterator trait, as originally discussed here. Iterator::try_collect() is a fallib...

#

also does the compiler understand this way of doing stuff?

#

try_collect without the collect

#

fn try_flatten<Output, Residual>(
    mut iter: impl Iterator<Item = Result<Output, Residual>>,
) -> Result<impl IntoIterator<Item = Output>, Residual> {
    iter.try_fold(vec![], |mut acc, item| {
        acc.push(item?);
        Ok(acc)
    })
}

#

is try_collect that lies

#try_collect without the collect