PMID to DOI (rust)

main.rs

use entrez_rs::eutils::{EFetch, Eutils, DB};
use entrez_rs::parser::pubmed::PubmedArticleSet;

fn main() {
    let xml = EFetch::new(DB::Pubmed, vec!["5337378", "33448306"])
        .run()
        .expect("Connection error");

    let parsed = PubmedArticleSet::read(&xml).expect("Parsing error");

    let data: Vec<_> = parsed
        .articles
        .into_iter()
        .filter_map(|a| a.pubmed_data)
        .filter_map(|d| d.article_id_list)
        .flat_map(|l| l.article_ids.into_iter())
        .filter(|i| i.id_type == Some("doi".to_string()))
        .filter_map(|x| x.id)
        .collect();
    println!("{:?}", data);
}