ndarray/
impl_clone.rs

1// Copyright 2014-2016 bluss and ndarray developers.
2//
3// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
4// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
5// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
6// option. This file may not be copied, modified, or distributed
7// except according to those terms.
8
9use crate::imp_prelude::*;
10use crate::ArrayPartsSized;
11use crate::RawDataClone;
12
13impl<S: RawDataClone, D: Clone> Clone for ArrayBase<S, D>
14{
15    fn clone(&self) -> ArrayBase<S, D>
16    {
17        // safe because `clone_with_ptr` promises to provide equivalent data and ptr
18        unsafe {
19            let (data, ptr) = self.data.clone_with_ptr(self.parts.ptr);
20            ArrayBase {
21                data,
22                parts: ArrayPartsSized::new(ptr, self.parts.dim.clone(), self.parts.strides.clone()),
23            }
24        }
25    }
26
27    /// `Array` implements `.clone_from()` to reuse an array's existing
28    /// allocation. Semantically equivalent to `*self = other.clone()`, but
29    /// potentially more efficient.
30    fn clone_from(&mut self, other: &Self)
31    {
32        unsafe {
33            self.parts.ptr = self.data.clone_from_with_ptr(&other.data, other.parts.ptr);
34            self.parts.dim.clone_from(&other.parts.dim);
35            self.parts.strides.clone_from(&other.parts.strides);
36        }
37    }
38}
39
40impl<S: RawDataClone + Copy, D: Copy> Copy for ArrayBase<S, D> {}
ndarray/impl_clone.rs

ndarray/
impl_clone.rs
