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Stacy Roll
Stacy Roll

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Comparison between k_board and termion 🦀⌨️

#rust #programming #coding #development

In this article, I'm going to compare the efficiency of two powerful keyboard handlers in the Rust ecosystem, namely k_board and termion.

To determine which one is more efficient, I will compare the final footprint of a file with each development dependency running the same code:

Print 'UP!' if the up arrow key is pressed, print 'DOWN!' if the down arrow key is pressed, and exit the program if the enter key is pressed.

termion code & final space 

use termion::input::TermRead; use termion::raw::IntoRawMode; use std::io::Write; fn main() { let mut stdout = std::io::stdout().into_raw_mode().unwrap(); let stdin: std::io::Stdin = std::io::stdin(); for c in stdin.keys() { match c.unwrap() { termion::event::Key::Up => println!("Up!"), termion::event::Key::Down => println!("Down!"), termion::event::Key::Char('\n') => break, _ => {} } stdout.flush().unwrap(); } }
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mateo@debian:~/Dev$ du -h pruebas/ 64K pruebas/.git/hooks 4,0K pruebas/.git/objects/pack 4,0K pruebas/.git/objects/info 12K pruebas/.git/objects 4,0K pruebas/.git/refs/heads 4,0K pruebas/.git/refs/tags 12K pruebas/.git/refs 8,0K pruebas/.git/info 112K pruebas/.git 12K pruebas/src 14M pruebas/target/release/deps 12K pruebas/target/release/.fingerprint/libc-f4899200925cd573 20K pruebas/target/release/.fingerprint/libc-0b715d722187b0c6 20K pruebas/target/release/.fingerprint/pruebas-801f0ed4b4a9017c 20K pruebas/target/release/.fingerprint/numtoa-5db795b61c1068b6 20K pruebas/target/release/.fingerprint/termion-57b99c4cdcd30adf 20K pruebas/target/release/.fingerprint/libc-1e1f3236a10c7892 116K pruebas/target/release/.fingerprint 4,0K pruebas/target/release/examples 4,0K pruebas/target/release/build/libc-f4899200925cd573/out 20K pruebas/target/release/build/libc-f4899200925cd573 4,6M pruebas/target/release/build/libc-1e1f3236a10c7892 4,6M pruebas/target/release/build 4,0K pruebas/target/release/incremental 18M pruebas/target/release 18M pruebas/target 19M pruebas/
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19 MB memory space used.

k_board code & final space 

fn main() { for key in k_board::Keyboard::new() { match key { k_board::Keys::Up => println!("Up!"), k_board::Keys::Down => println!("Down!"), k_board::Keys::Enter => break, _ => {} } } }
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mateo@debian:~/Dev$ du -h pruebas/ 64K pruebas/.git/hooks 4,0K pruebas/.git/objects/pack 4,0K pruebas/.git/objects/info 12K pruebas/.git/objects 4,0K pruebas/.git/refs/heads 4,0K pruebas/.git/refs/tags 12K pruebas/.git/refs 8,0K pruebas/.git/info 112K pruebas/.git 8,0K pruebas/src 4,6M pruebas/target/release/deps 20K pruebas/target/release/.fingerprint/pruebas-3a8501bba3baba89 20K pruebas/target/release/.fingerprint/k_board-217281d3fbdf4f77 44K pruebas/target/release/.fingerprint 4,0K pruebas/target/release/examples 4,0K pruebas/target/release/build 4,0K pruebas/target/release/incremental 4,6M pruebas/target/release 4,6M pruebas/target 4,8M pruebas/
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4,8 MB memory space used.

After performing the same task, we can see that k_board is 3.96 times lighter than termion. Additionally, it has a cleaner and more concise syntax.

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