rustHow to write struct to file in Rust

Writing a struct to a file in Rust is relatively straightforward. First, you need to create a File object, which can be done using the File::create method. Then, you need to serialize the struct into a byte array, which can be done using the bincode crate. Finally, you can write the byte array to the file using the write_all method. An example of this process is shown below:

use std::fs::File;
use bincode::{serialize, deserialize};

#[derive(Serialize, Deserialize)]
struct MyStruct {
    field1: i32,
    field2: String,
}

fn main() {
    let my_struct = MyStruct {
        field1: 5,
        field2: String::from("Hello World!"),
    };

    let serialized = serialize(&my_struct).unwrap();

    let mut file = File::create("my_struct.bin").unwrap();
    file.write_all(&serialized).unwrap();
}

The output of this code is a binary file called my_struct.bin which contains the serialized version of the struct.

Helpful links

• File::create
• bincode
• write_all

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