Question

How to access command line arguments in Rust

Answer 1

use std::env;

// CommandLine Arguments: filename.bin find 123

fn main() {
    let args: Vec<String> = env::args().collect();
    println!("{:?}", args);
    
    println!("{}", args[1]);
    println!("{}", args[2]);
    println!("{}", args[3]);
}



/*
run:
   
["./jdoodle", "filename.bin", "find", "123"]
filename.bin
find
123
   
*/

 

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Answer 2

use std::env;

// CommandLine Arguments: filename.bin abc

fn main() {
    let args: Vec<String> = env::args().collect();

    let filename = &args[1];
    let query = &args[2];

    println!("File: {}", filename);
    println!("Query: {}", query);
    
}



/*
run:
   
File: filename.bin
Query: abc
   
*/

 

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