qrcode 0.14.1

QR code encoder in Rust
Documentation 
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use qrcode::render::unicode;
use qrcode::QrCode;

fn main() {
    let code = QrCode::new(b"Hello").unwrap();
    let string = code.render::<unicode::Dense1x2>().quiet_zone(false).build();
    println!("{}", string);
}