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  1. fn main() {
  2.     let mut a = vec![3, 3, 4];
  3.     println!("a = {:?}", a);
  4.     let mut b: Vec<_> = (0..(10_i64 + 1))
  5.         .filter(|&i| i % 2 == 0)
  6.         .map(|i| i.pow(2))
  7.         .collect();
  8.     println!("b = {:?}", b);
  9.     let mut c = vec![];
  10.     println!("{:?}", c);
  11.     let cardinality = a.len();
  12.     println!("cardinality = {}", cardinality);
  13.     let second_element = a[2];
  14.     println!("second_element = {}", second_element);
  15.     for &x in &a {
  16.         println!("{}", x);
  17.     }
  18.     let num_of_three = a.iter()
  19.         .filter(|&&x| x == 3)
  20.         .count();
  21.     println!("num_of_three = {}", num_of_three);
  22.     a[2] = 3;
  23.     println!("a = {:?}", a);
  24.     c.push(42);
  25.     println!("c = {:?}", c);
  26.     let tail = b.pop().unwrap();
  27.     println!("tail = {}", tail);
  28.     println!("b = {:?}", b);
  29. }
Success #stdin #stdout 0s 4232KB
comments ()
stdin 
Standard input is empty
stdout 
a = [3, 3, 4]
b = [0, 4, 16, 36, 64, 100]
[]
cardinality = 3
second_element = 4
3
3
4
num_of_three = 2
a = [3, 3, 3]
c = [42]
tail = 100
b = [0, 4, 16, 36, 64]
https://ideone.com/yozZJI
list
language:
Rust (rust 1.56)
created:
5 years ago
visibility:
public

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