Rust

JSON: Access Array Values

See more JSON Examples

Demonstrates how to access values in a JSON array. Rust

let json = chilkat::JsonObject::new();

let json_str = "{ \"id\": 1, \"name\": \"A green door\", \"tags\": [\"home\", 22, \"green\"], \"price\": 125 }".to_string();

if json.load(&json_str).is_err() {
    println!("{}", json.last_error_text());
    return;
}

// Get the "tags" array, which contains "home", 22, "green"
let Ok(tags_array) = json.array_of("tags") else {
    println!("tags member not found.");
    return;
};

// Get the value at each array index. 
// Output will be:
// [0] = home
// [0] as integer = 0
// [1] = 22
// [1] as integer = 22
// [2] = green
// [2] as integer = 0

let array_size = tags_array.size();
for i in 0..array_size {

    let s_value = tags_array.string_at(i).unwrap_or_default();

    println!("[{}] = {}", i, s_value);

    let i_value = tags_array.int_at(i);
    println!("[{}] as integer = {}", i, i_value);

}

// Note: The StringAt method returns the value as a string regardless of the type.

// The IntAt method returns the value as an integer.  If the value does not convert to 
// an integer, then 0 is returned.