rust chrono

python;gutter:true; use chrono::prelude::*;</p> <p>// 1. 时间转字符 // 2. 字符转时间 // 3. 时间相加减 // 4. 时间加差异数</p> <p>fn main(){ let d = NaiveDate::from_ymd(2015, 3, 14); let a = NaiveDate::from_ymd(2015, 3, 16); let a_b :i64 = (d-a).num_days(); // println!("{:?}", (d-a).num_days()); // let c = a + chrono::Duration::from(1); // println!("{:?}", c);</p> <pre><code>let x = NaiveDate::parse_from_str("2015/9/30", "%Y/%m/%d"); // println!("{:?}",x); let y = x.unwrap() + chrono::Duration::days(-1_i64);  //i64类型 print!(" => {:?}", y); </code></pre> <p>}

Original: https://www.cnblogs.com/pythonClub/p/16544329.html
Author: CrossPython
Title: rust chrono

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