Collect into owned vec of owned strings in rust
rust, rust-obsolete
Solution
`.split_str` returns an iterator over `&str` slices, that is, it is returning subviews of the `row` data. The borrowed `&str` is not an owned `~str`: to make this work, either collect to a `~[&str]`, or, copy each `&str` into a `~str` before collecting:
let first: ~[&str] = row.split_str(",").collect();
let second: ~[~str] = row.split_str(",").map(|s| s.to_owned()).collect();
FWIW, if you're splitting on a single-character predicate, then `split` will be more efficient, (e.g. `row.split(',')` in this case).
Also, I recommend you upgrade to a more recent version of Rust, 0.11 was recently released, but the nightlies are the recommended install targets (change the `0.10` to `0.11` or `master` in the above documentation links for the corresponding docs).
With the nightly, the two snippets above would be written as:
let first: Vec<&str> = row.split(',').collect();
let second: Vec<String> = row.split(',').map(|s| s.to_string()).collect();
(Lastly, if you're struggling with the distinction of `&str` vs. `~str` aka `String`, I wrote up some details a while ago.)
Problem
I am trying to collect into an vec of strings in rust using the following: ``` let fields : ~[~str] = row.split_str(",").collect(); ``` I get the following error: expected std::iter::FromIterator<&str>, but found std::iter::FromIterator<~str> (str storage differs: expected `&` but found `~`) I have tried to use type hints but with no success