orx-iterable 1.3.0

Defines and implements Iterable, Collection and CollectionMut traits to represent types that can be iterated over multiple times.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

use orx_iterable::*;

fn test_it(values: Vec<usize>, col: impl Iterable<Item = usize>) {
    let sum = values.iter().sum::<usize>();
    let count = values.len();

    // tests
    assert_eq!(col.iter().count(), count);
    assert_eq!(col.iter().sum::<usize>(), sum);
}

#[test]
fn skipped() {
    let a = vec![1, 3, 7, 2, 8];
    test_it(vec![1, 3, 7, 2, 8], a.skipped(0).copied());

    let a = vec![1, 3, 7, 2, 8];
    test_it(vec![7, 2, 8], a.skipped(2).copied());

    let a = vec![1, 3, 7, 2, 8];
    test_it(vec![], a.skipped(5).copied());
}

#[test]
fn skipped_mut() {
    let mut a = vec![1, 3, 7, 2, 8];
    for x in a.skipped_mut(0).iter_mut() {
        *x += 10;
    }
    test_it(vec![11, 13, 17, 12, 18], a.copied());

    let mut a = vec![1, 3, 7, 2, 8];
    for x in a.skipped_mut(2).iter_mut() {
        *x += 10;
    }
    test_it(vec![1, 3, 17, 12, 18], a.copied());

    let mut a = vec![1, 3, 7, 2, 8];
    for x in a.skipped_mut(10).iter_mut() {
        *x += 10;
    }
    test_it(vec![1, 3, 7, 2, 8], a.copied());
}

#[test]
fn into_skipped() {
    let a = vec![1, 3, 7, 2, 8];
    let mut a = a.into_skipped(0);
    for x in a.iter_mut() {
        *x += 10;
    }
    test_it(vec![11, 13, 17, 12, 18], a.copied());

    let a = vec![1, 3, 7, 2, 8];
    let mut a = a.into_skipped(2);
    for x in a.iter_mut() {
        *x += 10;
    }
    test_it(vec![17, 12, 18], a.copied());

    let a = vec![1, 3, 7, 2, 8];
    let mut a = a.into_skipped(10);
    for x in a.iter_mut() {
        *x += 10;
    }
    test_it(vec![], a.copied());
}

#[cfg(feature = "std")]
mod object_safe {
    use orx_iterable::{obj_safe::*, *};

    fn obj_test_it(values: Vec<usize>, col: &dyn IterableObj<Item = usize>) {
        let sum = values.iter().sum::<usize>();
        let count = values.len();

        // tests
        assert_eq!(col.boxed_iter().count(), count);
        assert_eq!(col.boxed_iter().sum::<usize>(), sum);
    }

    #[test]
    fn obj_skipped() {
        let a = vec![1, 3, 7, 2, 8];
        obj_test_it(vec![1, 3, 7, 2, 8], &a.skipped(0).copied());

        let a = vec![1, 3, 7, 2, 8];
        obj_test_it(vec![7, 2, 8], &a.skipped(2).copied());

        let a = vec![1, 3, 7, 2, 8];
        obj_test_it(vec![], &a.skipped(5).copied());
    }

    #[test]
    fn obj_skipped_mut() {
        let mut a = vec![1, 3, 7, 2, 8];
        for x in a.skipped_mut(0).iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![11, 13, 17, 12, 18], &a.copied());

        let mut a = vec![1, 3, 7, 2, 8];
        for x in a.skipped_mut(2).iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![1, 3, 17, 12, 18], &a.copied());

        let mut a = vec![1, 3, 7, 2, 8];
        for x in a.skipped_mut(10).iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![1, 3, 7, 2, 8], &a.copied());
    }

    #[test]
    fn obj_into_skipped() {
        let a = vec![1, 3, 7, 2, 8];
        let mut a = a.into_skipped(0);
        for x in a.iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![11, 13, 17, 12, 18], &a.copied());

        let a = vec![1, 3, 7, 2, 8];
        let mut a = a.into_skipped(2);
        for x in a.iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![17, 12, 18], &a.copied());

        let a = vec![1, 3, 7, 2, 8];
        let mut a = a.into_skipped(10);
        for x in a.iter_mut() {
            *x += 10;
        }
        obj_test_it(vec![], &a.copied());
    }
}