array_tool 0.3.7

Helper methods for processing collections
Documentation 
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extern crate array_tool;

#[test]
fn it_implements_individual_uniq_on_vec() {
  use array_tool::vec::Uniq;
  assert_eq!(vec![1,2,3,4,5,6].uniq(vec![1,2,5,7,9]),vec![3,4,6]);
  assert_eq!(vec![1,2,3,1,3,2,1,3,1,2,3,1,2,3,3,1,2,3,3,1,2,3,1,2,3,3,4,1,5,4,6].uniq(vec![3,5]),
             vec![1,2,4,6]
            );
}

#[test]
fn it_can_return_its_own_unique() {
  use array_tool::vec::Uniq;
  assert_eq!(vec![1,2,1,3,4,3,4,5,6].unique(),vec![1,2,3,4,5,6]);
  assert_eq!(vec![1,2,3,1,3,2,1,3,1,2,3,1,2,3,3,1,2,3,3,1,2,3,1,2,3,3,4,1,5,4,6].unique(),
             vec![1,2,3,4,5,6]
            );
}

#[test]
fn it_answers_about_uniqueness() {
  use array_tool::vec::Uniq;
  assert_eq!(vec![1,2,1,3,4,3,4,5,6].is_unique(), false);
  assert_eq!(vec![1,2,3,4,5,6].is_unique(), true);
}

#[test]
fn it_shifts() {
  use array_tool::vec::Shift;
  let mut x = vec![1,2,3];
  x.unshift(0);
  assert_eq!(x, vec![0,1,2,3]);
  assert_eq!(x.shift(), 0);
  assert_eq!(x, vec![1,2,3]);
}

#[test]
fn it_intersects() {
  use array_tool::vec::Intersect;
  assert_eq!(vec![1,1,3,5].intersect(vec![1,2,3]), vec![1,3])
}

#[test]
fn it_intersects_if() {
  use array_tool::vec::Intersect;
  use std::ascii::AsciiExt;
  assert_eq!(vec!['a','a','c','e'].intersect_if(vec!['A','B','C'], |l, r| l.eq_ignore_ascii_case(r)), vec!['a','c']);
}

#[test]
fn it_multiplies(){
  use array_tool::vec::Times;
  assert_eq!(vec![1,2,3].times(3), vec![1,2,3,1,2,3,1,2,3]);

  // Empty collection
  let vec1: Vec<i32> = Vec::new();
  let vec2: Vec<i32> = Vec::new();
  assert_eq!(vec1.times(4), vec2)
}

#[test]
fn it_joins(){
  use array_tool::vec::Join;
  assert_eq!(vec![1,2,3].join(","), "1,2,3")
}

#[test]
fn it_creates_union() {
  use array_tool::vec::Union;
  assert_eq!(vec!["a","b","c"].union(vec!["c","d","a"]), vec![ "a", "b", "c", "d" ]);
  assert_eq!(vec![1,2,3,1,3,2,1,3,1,2,3,1,2,3,3,1,2,3,3,1,2,3,1,2,3,3,4,1,4,6].union(vec![3,5,7,8,0]),
             vec![1,2,3,4,6,5,7,8,0]
            );
}