Passing and receiving array object between Node.js and C++ binding
$ g++ -dynamiclib -o mylib.dylib main.cpp
$ node index.js
[matrix size: 100x100; n_nonzero: 4; density: 0.04%]
(1, 1) 2.0000
(2, 2) 6.0000
(3, 3) 12.0000
(4, 4) 20.0000
> r
[ buffer: <Buffer@0x102805568 > ]
> r[0]
0
> r[1]
2
> r[2]
6
> r[3]
12
> r[4]
20
>