A fast parser for fastq.

This library can process fastq files at about the speed of the coreutils wc -l (about 2GB/s on my laptop). It also makes it easy to distribute the processing of fastq records to many cores.

See the documentation for details.

Examples

Count the number of fastq records that contain an N

```rust use fastq::{Parser, Record}; let reader = ::std::io::stdin(); let mut parser = Parser::new(reader); let mut total: usize = 0;

parser.each(|record| { if record.seq().contains(&b'N') { total += 1 } }).unwrap(); println!("{}", total); ```

And an (unnecessarily) parallel version of this

```rust const n_threads: usize = 2;

use fastq::{Parser, Record}; let reader = ::std::io::stdin(); let parser = Parser::new(reader);

let results: Vec = parser.paralleleach(nthreads, |recordsets| { let mut threadtotal = 0; for recordset in recordsets { for record in recordset.iter() { if record.seq().contains(&b'N') { threadtotal += 1; } } } thread_total }).expect("Invalid fastq file");

let total: u64 = results.iter().sum(); println!("{}", total); ```