rapl 0.3.0

A crate that makes numerical scripting with Rust simple and enjoyable.
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

use super::*;
use std::ops::{Index, IndexMut};

impl<T: Clone + Debug, R: Unsigned> Ndarr<T, R> {
    ///Modifies an element at an specific position by assign a new value.
    pub fn assign_at<D: Into<Dim<R>>>(&mut self, index: D, value: T) {
        let flat_pos = self.dim.get_flat_pos(&index.into()).unwrap();
        self.data[flat_pos] = value;
    }
    pub fn index_slice_notyped(&self, axis: usize, index: usize) -> Ndarr<T, UTerm> {
        let new_shape = self.dim.clone().remove_element_notyped(axis);
        let n_new = helpers::multiply_list(&new_shape.shape, 1); // number of elements in new slice;

        let iota = 0..n_new;
        let indexes: Vec<Dim<UTerm>> = iota
            .map(|i| {
                new_shape
                    .get_indexes(&i)
                    .insert_element_notyped(axis, index)
            })
            .collect(); //indexes of each element
        let flat_pos: Vec<usize> = indexes
            .iter()
            .map(|index| self.dim.get_flat_pos(index).unwrap())
            .collect();
        let new_data: Vec<T> = flat_pos.iter().map(|i| self.data[*i].clone()).collect();
        return Ndarr::new(&new_data, new_shape).unwrap();
    }
}

impl<T: Clone + Default + Debug, R: Unsigned, I: Into<Dim<R>>> Index<I> for Ndarr<T, R> {
    type Output = T;
    fn index(&self, index: I) -> &Self::Output {
        let flat_pos = self.dim.get_flat_pos(&index.into()).unwrap();
        &self.data[flat_pos]
    }
}

impl<T: Clone + Default + Debug, R: Unsigned, I: Into<Dim<R>>> IndexMut<I> for Ndarr<T, R> {
    fn index_mut(&mut self, index: I) -> &mut Self::Output {
        let flat_pos = self.dim.get_flat_pos(&index.into()).unwrap();
        &mut self.data[flat_pos]
    }
}

#[cfg(test)]
mod indexing_tes {
    use super::*;
    #[test]
    fn assing_at_t() {
        let mut arr = Ndarr::from([[1, 2], [3, 4]]);
        arr.assign_at([0, 1], 8);
        assert_eq!(&arr, &Ndarr::from([[1, 8], [3, 4]]));
        arr.assign_at([1, 1], 10);
        assert_eq!(&arr, &Ndarr::from([[1, 8], [3, 10]]));
    }

    #[test]
    fn indexing() {
        let mut arr = Ndarr::from([[1, 2], [3, 4]]);
        assert_eq!(arr[[0, 0]], 1);
        arr[[1, 1]] = 10;
        assert_eq!(&arr, &Ndarr::from([[1, 2], [3, 10]]));
    }
}

#[cfg(test)]

mod indexing_test {
    use super::*;
    #[test]
    fn index_slice() {
        let a = Ndarr::from([[1, 2, 3], [4, 5, 6]]);
        let b = a.index_slice_notyped(0, 1);
        assert_eq!(b.data, vec![4, 5, 6])
    }
}