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#1670 in Parser implementations
463 downloads per month
Used in 3 crates
18KB
388 lines
Scanf
If you know it from C, same functionality but with memory safety.
let mut number: u32 = 0;
let mut name: String = String::new();
if scanf!("{},{}", number, name).is_ok() {
println!("Input is: {} and {}", number, name);
}
let input = "5,something";
let mut number: u32 = 0;
let mut name: String = String::new();
if let Err(error) = sscanf!(input, "{},{}", number, name) {
panic!("Error {} using sscanf!", error);
}
Look more examples in the documentation.
lib.rs
:
scanf! & sscanf!
Similar to C's but with memory safety.
Examples
use scanf::scanf;
let mut product: String = String::new();
let mut price: f32 = 0.0;
println!("Insert product and price (product: price):");
if scanf!("{}: {}", product, price).is_ok() {
println!("Price of {} is {:.2}", product, price);
}
use scanf::sscanf;
let input: &str = "Candy: 2.75";
let mut product: String = String::new();
let mut price: f32 = 0.0;
println!("Insert product and price (product: price):");
sscanf!(input, "{}: {}", product, price);
println!("Price of {} is {:.2}", product, price);
It's possible to indicate the type in the format string:
let mut product: String = String::new();
let mut price: f32 = 0.0;
println!("Insert product and price (product: price):");
scanf!("{string}: {f32}", product, price);
Also escape brackets:
let input: &str = "{Candy}";
let mut product: String = String::new();
sscanf!(input, "{{{}}}", product);
assert_eq!(product, "Candy");
Examples has been compiled and sscanf
's examples also ran as tests.
If you have problems using the example code, please, create an issue.
Dependencies
~1MB
~20K SLoC