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Running Rust 1.59 (2021 Edition) - IntelliSense is not available

Rust builds with Cargo and ships a few crates:
anyhow = 1.0.32
bitflags = 1.2.1
chrono = 0.4.18
itertools = 0.9.0
nom = 5.1.2
rand = 0.7.3
rayon = 1.4.0
reqwest = 0.10.8
regex = 1.3.9
serde = 1.0.116
serde_json = 1.0.57
time = 0.2.22
url = 2.1.1
uuid = 0.8.1

Remember to declare crate dependencies with extern, like so:

extern crate regex;

use regex::Regex;

fn main() {
    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();
    println!("Did our date match? {}", re.is_match("2014-01-01"));
}
Code language: Rust (rust)

You can use some basic asserts for testing as well:

fn main() {
  assert!(true, "check boolean");
  assert_eq!(2, 2, "compare numbers");
  assert_eq!("abc", "abc", "compare strings");
  assert_eq!([1,2,3], [1,2,3], "compare lists");
}
Code language: Rust (rust)

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