Improved naming of Header constructor

`from_record` is now called `with_record` as the library standard
suggests

src/headparse.rs

@@ -410,7 +410,7 @@ impl Header {
     /// 
     /// Initializes the signal_specs vector with the correct capacity provided
     /// by the record.
-    fn from_record(record: Record) -> Header {
+    fn with_record(record: Record) -> Header {
         let capacity = record.signal_count;
         Header { record: Some(record), signal_specs: Vec::with_capacity(capacity) }
     }
@@ -448,7 +448,7 @@ pub fn parse_header(header_data: &str) -> Result<Header, &str> {
             match possible_record {
                 Ok(rec) => {
                     specs_max = rec.signal_count;
-                    header = Header::from_record(rec);
+                    header = Header::with_record(rec);
                     found_record = true;
                     continue;
                 }

src/main.rs

@@ -1,6 +1,8 @@
 use std::{env::{self}, io::Error, path::Path};
 use std::fs;
 
+use crate::headparse::Header;
+
 pub mod headparse; // The HEAder parsing 
 
 /// Use for handling possible formats of the WFDB data
@@ -28,14 +30,17 @@ fn main() -> Result<(), Error>{
         println!("File provided is not a .hea file");
         return Ok(());
     }
-
+    
+    {
     let hea_file_result = fs::read_to_string(filepath);
-    match hea_file_result {
-        Ok(file_data) => {
-            let header = headparse::parse_header(file_data.as_str());
-            dbg!(header);
+        match hea_file_result {
+            Ok(file_data) => {
+                let header = headparse::parse_header(file_data.as_str());
+
+                dbg!(header);
+            }
+            Err(e) => return Err(e)
         }
-        Err(e) => return Err(e)
     }
     println!("Hello, world!");
     Ok(())
@@ -44,4 +49,4 @@ fn main() -> Result<(), Error>{
 fn help() {
     println!("Conversion of WFDB files to a more human readable format. By default to a CSV.");
     println!("\nUse in the format \"wfdb_corrosion (.hea filename)\"")
-}
+}