veho 0.0.20

a iterable toolset
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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

use crate::matrix::Matrix;

// trait MatrixTrait<T> =
// IntoIterator where
// Self::Item: IntoIterator;

pub trait Mappers<R>: IntoIterator<Item=R>
    where R: IntoIterator
{
    fn mapper<P, F>(self, mut f: F) -> Matrix<P> where
        Self: Sized,
        F: FnMut(R::Item) -> P,
    {
        self.into_iter().map(
            |row| row.into_iter().map(
                |x| f(x)
            ).collect()
        ).collect()
    }

    fn iterate<F>(self, mut f: F) where
        Self: Sized,
        F: FnMut(R::Item)
    {
        self.into_iter().for_each(
            |row| row.into_iter().for_each(
                |x| f(x)
            )
        )
    }

    fn indexed_mapper<P, F>(self, mut f: F) -> Matrix<P> where
        Self: Sized,
        F: FnMut(usize, usize, R::Item) -> P,
    {
        self.into_iter().enumerate().map(
            |(i, row)| row.into_iter().enumerate().map(
                |(j, v)| f(i, j, v)
            ).collect()
        ).collect()
    }

    fn indexed_iterate<F>(self, mut f: F) where
        Self: Sized,
        F: FnMut(usize, usize, R::Item)
    {
        self.into_iter().enumerate().for_each(
            |(i, row)| row.into_iter().enumerate().for_each(
                |(j, v)| f(i, j, v)
            )
        )
    }
}


impl<R, M> Mappers<R> for M where
    R: IntoIterator,
    M: IntoIterator<Item=R> + ?Sized
{}


pub fn mapper<M, R, P, F>(mx: M, f: F) -> Matrix<P> where
    R: IntoIterator,
    M: IntoIterator<Item=R>,
    F: FnMut(R::Item) -> P,
{ mx.mapper(f) }

pub fn iterate<M, R, F>(mx: M, f: F) where
    R: IntoIterator,
    M: IntoIterator<Item=R>,
    F: FnMut(R::Item)
{ mx.iterate(f) }


pub fn indexed_mapper<M, R, P, F>(mx: M, f: F) -> Matrix<P> where
    R: IntoIterator,
    M: IntoIterator<Item=R>,
    F: FnMut(usize, usize, R::Item) -> P,
{ mx.indexed_mapper(f) }

pub fn indexed_iterate<M, R, F>(mx: M, f: F) where
    R: IntoIterator,
    M: IntoIterator<Item=R>,
    F: FnMut(usize, usize, R::Item)
{ mx.indexed_iterate(f) }


#[cfg(test)]
mod tests_mappers {
    use crate::matrix::Mappers;

    #[test]
    fn test_vec_mapper() {
        let mx = vec![
            vec![1, 1, 1],
            vec![2, 2, 2],
            vec![3, 3, 3],
        ];
        let result = (&mx).mapper(|x| x + 1);
        println!(">> {:?}", result);
    }

    #[test]
    fn test_vec_iterate() {
        let mut mx = vec![
            vec![1, 1, 1],
            vec![2, 2, 2],
            vec![3, 3, 3],
        ];
        let result = (&mut mx).iterate(|x| {
            *x += 1;
            print!("{}, ", x)
        });
        println!(">> {:?}", result);
        println!(">> {:?}", mx);
    }

    #[test]
    fn test_vec_mutate() {
        let mut mx = vec![
            vec![1, 1, 1],
            vec![2, 2, 2],
            vec![3, 3, 3],
        ];
        let mut text = "_".to_owned();
        (&mut mx).iterate(|x| {
            let _ = &mut text.push_str(&format!("#{:0>6X}", x));
            *x += 1
        });
        println!(">> {:?}", mx);
    }

    #[test]
    fn test_vec_indexed_mapper() {
        let mx = vec![
            vec![1, 1, 1],
            vec![2, 2, 2],
            vec![3, 3, 3],
        ];
        let result = mx.indexed_mapper(|i, j, x| (i, j, x));
        println!(">> {:?}", result);
    }

    #[test]
    fn test_vec_indexed_iterate() {
        let mx = vec![
            vec![1, 1, 1],
            vec![2, 2, 2],
            vec![3, 3, 3],
        ];
        mx.indexed_iterate(|i, j, x| print!("({}, {}) [{}], ", i, j, x + 1));
    }
}


#[cfg(test)]
mod arr_matrix_mappers_tests {
    use crate::matrix::Mappers;

    #[test]
    fn test_arr_mapper() {
        let mx = [
            [1, 1, 1],
            [2, 2, 2],
            [3, 3, 3]
        ];
        let result = mx.iter().mapper(|x| *x + 1);
        println!(">> {:?}", result);
    }
}