Macro iocutil::at

macro_rules! at {
    (now) => { ... };
    ($m:expr, minutes ago) => { ... };
    ($h:expr, hours ago) => { ... };
    ($d:expr, days ago) => { ... };
    ($w:expr, weeks ago) => { ... };
    ($base:expr => $m:expr, minutes) => { ... };
    ($base:expr => $h:expr, hours) => { ... };
    ($base:expr => $d:expr, days) => { ... };
    ($base:expr => $w:expr, weeks) => { ... };
    (now => $m:expr, minutes) => { ... };
    (now => $h:expr, hours) => { ... };
    (now => $d:expr, days) => { ... };
    (now => $w:expr, weeks) => { ... };
}

macro datetime at specified condition

Example

use iocutil::prelude::*;

let now = at!(now);
let ten_minutes_ago = at!(10, minutes ago);
let three_hours_ago = at!(3, hours ago);
let two_days_ago = at!(2, days ago);
let two_week_ago = at!(2, weeks ago);
at!(ten_minutes_ago => 5, minutes); // 5 minutes ago
at!(three_hours_ago => 1, hours); // 2 hours ago
at!(two_days_ago => 1, days); // a day ago
at!(two_week_ago => 1, weeks); // a week ago
at!(now => 10, minutes); // 10 minutes later
at!(now => 1, hours); // 1 hours later
at!(now => 10, days); // 10 days later
at!(now => 1, weeks); // 1 week later

let x = vtdatetime(at!(day!(1992, 01, 17).unwrap() => 1, days));
assert_eq!(x.as_str(), "1992-01-18T00:00:00")