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rust hashmap to json

Dangerous Dotterel answered on March 3, 2023 Popularity 6/10 Helpfulness 4/10

answer rust hashmap to json

rust hashmap to json

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You can convert a Rust HashMap to JSON using the serde_json crate. Here is an example Rust code that demonstrates how to do this:

rust
use std::collections::HashMap;
use serde_json::{json, to_string_pretty};

fn main() {
    // Create a HashMap with some data
    let mut map = HashMap::new();
    map.insert("key1", "value1");
    map.insert("key2", "value2");
    map.insert("key3", "value3");

    // Convert the HashMap to JSON
    let json_data = json!(map);
    let json_string = to_string_pretty(&json_data).unwrap();

    // Print the JSON string
    println!("{}", json_string);
}
In this example, we first create a HashMap with some data. We then use the json! macro from the serde_json crate to convert the HashMap to a JSON value. Finally, we use the to_string_pretty function from the serde_json crate to convert the JSON value to a formatted JSON string.

The output of the above code will be:

json
Copy code
{
  "key1": "value1",
  "key2": "value2",
  "key3": "value3"
}
Note that you will need to add the serde and serde_json dependencies to your Cargo.toml file in order to use the serde_json crate:

toml
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[dependencies]
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"

Popularity 6/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: hashmap javascript rust to-json

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Contributed on Mar 03 2023

Dangerous Dotterel

0 Answers Avg Quality 2/10

rust hashmap to json

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