Pure Programmer
Project: Credit Card Mask
Write a function that takes a credit card number in the format "1234 5678 9012 3456" and returns a string with all but the last four digits replaced with an "X". Use a regular expression to match a group of four digits followed by a space and replace them with "XXXX ".
Output
$ rustc CreditCardMask.rs
error[E0432]: unresolved import `regex`
--> CreditCardMask.rs:8:5
|
8 | use regex::Regex;
| ^^^^^ maybe a missing crate `regex`?
|
= help: consider adding `extern crate regex` to use the `regex` crate
error[E0425]: cannot find function `replaceAll` in this scope
--> CreditCardMask.rs:13:9
|
13 | return replaceAll(cardNumber,Regex::new(r"\\d{4,4} ").unwrap(),"XXXX ");
| ^^^^^^^^^^ not found in this scope
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0425, E0432.
For more information about an error, try `rustc --explain E0425`.