All these examples assume an understanding ahead of time of your data structure.
Can you write examples in Python and Javascript where you'd extract those titles from an arbitrary JSON structure? ;-)
Can you write examples in Python and Javascript where you'd extract those titles from an arbitrary JSON structure? ;-)
How would one use JSONPath to extract all book titles from an arbitrary JSON structure?
Also, when might that use case apply? I can't think of when I've ever needed to do something like this, but I'm interested in learning. :)
$..book[?@.price<10].title
find_key = (data, key) => {
if(data instanceof Array){
return data.map(x=>find_key(x, key)).flat()
}
if(data instanceof Object){
let res = Object.keys(data).map(x=>find_key(data[x], key))
if(data.hasOwnProperty(key)){
res.push(data[key])
}
return res.flat()
}
return []
}
find_key(data, "book").filter(x=>x.price < 10).map(x=>x.title)