Merge pull request #11 from apopiak/to_string

use `to_owned` instead of the slower `to_string`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "verex"
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Alexander Popiak <alexander.popiak@gmail.com>"]
 description = "This crate provides a Rust implementation of VerbalExpressions in order to build regex strings without knowing the minutiae of regex syntax."
 documentation="https://verbalexpressions.github.io/RustVerbalExpressions/verex/"

src/verex/mod.rs

@@ -57,7 +57,7 @@ const ESCAPE_PAIRS: [(&'static str, &'static str); 14] = [
 ];
 
 fn escape(string: &str) -> String {
-    let mut result = string.to_string();
+    let mut result = string.to_owned();
     for pair in ESCAPE_PAIRS.into_iter() {
         let regex = Regex::new(pair.0).unwrap();
         result = regex.replace_all(result.as_ref(), pair.1);
@@ -93,7 +93,7 @@ impl Verex {
 
     /// Create a `Verex` object from a `&str`
     pub fn from_str(string: &str) -> Verex {
-        Verex::from_string(string.to_string())
+        Verex::from_string(string.to_owned())
     }
 
     // --------------------------------------------------
@@ -315,7 +315,7 @@ impl Verex {
     /// A range of characters e.g. [A-Z]
     /// Usage example: verex.range(vec![('a', 'z'),('A', 'Z')])
     pub fn range(&mut self, range: Vec<(char, char)>) -> &mut Verex {
-        let mut string = r"[".to_string();
+        let mut string = r"[".to_owned();
         for tuple in range {
             let from = tuple.0;
             let to = tuple.1;

src/verex/test.rs

@@ -26,7 +26,7 @@ fn test_constructors() {
     let verex1: Verex = Verex::new();
     assert_eq!(verex1.source(), r"(?:)");
 
-    let verex2: Verex = Verex::from_string(r"a".to_string());
+    let verex2: Verex = Verex::from_string(r"a".to_owned());
     assert_eq!(verex2.source(), A_VEREX_STRING);
 
     let verex3: Verex = Verex::from_str(r"a");