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Take notes on the command line: Difference between revisions
→{{header|Rust}}: add Rust solution
(→{{header|Rust}}: add Rust solution) |
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File.open(notes, 'a') {|file| file.puts "%s\n\t%s" % [Time.now, ARGV.join(' ')]}
end</lang>
=={{header|Rust}}==
This uses version 0.4 of the <code>chrono</code> crate
<lang Rust>extern crate chrono;
use std::fs::OpenOptions;
use std::io::{self, BufReader, BufWriter};
use std::io::prelude::*;
use std::env;
const FILENAME: &str = "NOTES.TXT";
fn show_notes() -> Result<(), io::Error> {
let file = OpenOptions::new()
.read(true)
.create(true) // create the file if not found
.write(true) // necessary to create the file
.open(FILENAME)?;
let mut buf_reader = BufReader::new(file);
let mut contents = String::new();
buf_reader.read_to_string(&mut contents)?;
println!("{}", contents);
Ok(())
}
fn add_to_notes(note: &str) -> Result<(), io::Error> {
let file = OpenOptions::new()
.append(true) // disables overwriting, writes to the end of the file
.create(true)
.open(FILENAME)?;
let mut buf_writer = BufWriter::new(file);
let date_and_time = chrono::Local::now();
writeln!(buf_writer, "{}", date_and_time)?;
writeln!(buf_writer, "\t{}", note)
}
fn main() {
let note = env::args().skip(1).collect::<Vec<_>>();
if note.is_empty() {
show_notes().expect("failed to print NOTES.TXT");
} else {
add_to_notes(¬e.join(" ")).expect("failed to write to NOTES.TXT");
}
}</lang>
=={{header|Scala}}==
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