How to select sample IDs using regular expressions

Drashti Shah

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Bioinformatics with Rust

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Dec 16, 2023

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A Rust function that returns a vector of string slices that match a regex pattern

Arguments

• vector: a vector of string slices to be filtered
• pattern: a regex pattern to match the elements of the vector

Code & Example

use regex::Regex;

fn main() {
    let bio_sample_id_vector = vec![
        "SAMN12704278",
        "SAMEA100981162",
        "SAMN03738170",
        "SAMN25236422",
        "SAMN31210262",
        "SAMD00036622",
    ];
    let pattern = Regex::new(r"^SAMN.*2$").unwrap();

    // Both the vector and the pattern are moved
    // After the move, select_by_regex_pattern will own them
    let selected_sample_ids = select_by_regex_pattern(bio_sample_id_vector, pattern);
    println!("{:?}", selected_sample_ids)
}

fn select_by_regex_pattern(vector: Vec<&str>, pattern: Regex) -> Vec<&str> {
    vector
        .into_iter()
        .filter(|&element| pattern.is_match(element))
        .collect()
}

Next Steps

• Play with the code in Rust Playground
• Explore the regex crate