ndarray

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Impl a lifetime-relaxed broadcast for ArrayView

4

ArrayView::broadcast has a lifetime that depends on &self instead of its internal buffer. This prevents writing some types of functions in an allocation-free way. For instance, take the numpy `meshgrid`...

roblabla

cumprod [numpy](https://numpy.org/doc/stable/reference/generated/numpy.cumprod.html) has this implemented. It is the torch.cumprod It will be good to have this implemented. The library I am working on [burn](https://github.com/tracel-ai/burn) - is adding prod functionality and...

unrenormalizable

derived Debug for Iter and IterMut

2

My attempt to implement Debug for Iter, I also did so for IterMut. #1204 Example: input: ```rust fn main() { let foo = ndarray::Array1::::zeros(10); println!("{:?}", std::iter::zip(0..foo.len(), &foo)); } ``` output:...

biskwikman

Implement product_axis

1

product_axis is like sum_axis but for product. [numpy](https://numpy.org/doc/stable/reference/generated/numpy.prod.html) has this implemented. it is the torch.prod equivalent with the dim argument. It will be good to have this implemented. Some of...

unrenormalizable

`ArrayView` should be covariant over lifetime

4

Take a look at the following example: ```rust fn reference_covariant &'a f64 { x } fn arrayview_covariant) -> ArrayView1(x: ArrayView1 { -- lifetime `'a` defined here x ^ returning this...

patengel

Code formatting

3

The code in this repository doesn't seem to be formatted by rustfmt, which can lead to useless discussions and back and forth in the PRs. The advantages of a standard...

nilgoyette

Slow iteration because of `IxDyn`

2

As I described in https://github.com/rust-ndarray/ndarray/issues/1339, an array with `IxDyn` has 10x slower iteration performance than an equivalent array using a fixed-size index. This has wide-reaching implications, as this means that...

RunDevelopment

Add matlab-like tril method for two-dimensional arrays

4

Adding `trill` method for two-dimensional arrays in order to create a lower triangular matrix from a given matrix. This function reproduces the behavior of the [Matlab function with same name](https://www.mathworks.com/help/matlab/ref/tril.html):...

fedemagnani

add associated constructor to `Dimension` trait

3

I am working on the [ndarray-interp](https://github.com/jonasBoss/ndarray-interp) crate, which is generic over the number of dimensions. This causes difficulties when the I need to construct a Dimension that is bigger than...

jonasBoss

Only small-sized arguments work for `arr2`, `arr3`, etc. This is a duplicate of issue #446 which (IMO) was closed prematurely. ```rust use ndarray::prelude::*; fn main() { // This works let...

Jasha10