Simplify array of objects to 2d array

[wangjiawen2013]

Hi, how to convert the following array of objects to 2d array for simplification in Rust ?

here is the array of objects:

[
    {"town":"t1","area":16800,"population":1600},
    {"town":"t2","area":6400,"population":1800}
]

It is expected to be:

[
    ["town","area","population"],
    ["t1",16800,1600],
    ["t2", 6400, 1800]
]

[martin-g]

It looks like you want to use CSV instead of JSON.

[wangjiawen2013]

This is necessary in some cases, such as Charming (a popular rust graph library) are using 2d array json format:
https://github.com/yuankunzhang/charming/blob/main/gallery/asset/life-expectancy-table.json