add chrono

chrono/Cargo.lock

@@ -0,0 +1,82 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+
+[[package]]
+name = "chrono"
+version = "0.1.0"
+dependencies = [
+ "chrono 0.4.11",
+]
+
+[[package]]
+name = "chrono"
+version = "0.4.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
+dependencies = [
+ "num-integer",
+ "num-traits",
+ "time",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
+
+[[package]]
+name = "num-integer"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

chrono/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "chrono"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = "0.4.11"
+

chrono/src/main.rs

@@ -0,0 +1,21 @@
+use chrono::prelude::*;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    println!("UTC time:            {}", Utc::now());
+    println!("UTC time:            {:?}", Utc::now());
+    println!("UTC time(RFC2822):   {}", Utc::now().to_rfc2822());
+    println!("UTC time(RFC3339):   {}", Utc::now().to_rfc3339());
+    println!("Local time:          {}", Local::now());
+    println!("Local time:          {:?}", Local::now());
+    println!("Local time(RFC2822): {}", Local::now().to_rfc2822());
+    println!("Local time(RFC3339): {}", Local::now().to_rfc3339());
+
+    println!("{}", "2020-01-01T12:00:00Z".parse::<DateTime<Utc>>()?);
+    println!("{}", "2020-01-01T12:00:00+08:00".parse::<DateTime<Local>>()?);
+
+    println!("Current timestamp(secs):   {}", Utc::now().timestamp());
+    println!("Current timestamp(millis): {}", Utc::now().timestamp_millis());
+    println!("Current timestamp(nanos):  {}", Utc::now().timestamp_nanos());
+
+    Ok(())
+}