Added support for negative numbers

[evpf.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index c5dd52e..d44387c 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -261,7 +261,7 @@ fn main() {
        // collect the command line arguments - if any 
        let args : Vec<String> = env::args().collect ();
        // regular expression to match a number 
-       let match_num = Regex::new (r"^\d+?\.*?\d*?$").unwrap ();
+       let match_num = Regex::new (r"^\-?\d+?\.*?\d*?$").unwrap ();
        
        if args.len () > 1 {
        // if arguments are provided run in command line mode - i.e. print the