[Cython] how to initialize my c array in a quick way?

[Stefan Behnel]

Hi,

Greg Ewing wrote:
> You can do
> 
>    a[0], a[1], a[2], a[3], a[4] = 1, 3, 28, 5, 3
> 
> which will get turned into a series of assignments.
> 
> Ideally, what you *should* be able to do is
> 
>    a[:] = 1, 3, 28, 5, 3

In Cython, you can now do

	cdef int a[5]
	a[:] = [1, 3, 28, 5, 3]

or

	cdef int a[20]
	a[1:6] = [1, 3, 28, 5, 3]

or even

	cdef int a[20]
	start = 1
	end = 6
	a[start:end] = [1, 3, 28, 5, 3]

However, the way it's currently implemented does no bounds checking, so it's
pretty easy to shoot yourself in the foot when you assign non-existing slices.
It's actually not so easy to determine at compile time how long the lhs slice
is, and how long the assigned sequence is.

There's definitely more room for improvements. :)

Stefan