get submodules to work

src/main.rs

@@ -7,6 +7,17 @@ mod variations;
 use std::env;
 use parse::parse;
 
+use periodic_table::Element;
+
+use crate::variations::calculate::get_variations;
+
+
+#[derive(Debug)]
+pub struct ElementNr<'a> {
+    element : &'a Element,
+    nr : u32
+}
+
 
 fn main() {
     let mut args = vec![];
@@ -18,4 +29,6 @@ fn main() {
     println!("{:#?}", elements);
     println!("{}", elements.len());
     // TODO: determine element group of each element
+
+    let _variations = get_variations(elements);
 }

src/parse.rs

@@ -1,10 +1,6 @@
 use periodic_table::Element;
+use crate::ElementNr;
 
-#[derive(Debug)]
-pub struct ElementNr<'a> {
-    element : &'a Element,
-    nr : u32
-}
 
 pub fn parse(arg: &String) -> Vec<ElementNr<'static>> {
     let mut char_before: Option<char> = None;

src/variations/calculate.rs

@@ -0,0 +1,13 @@
+use periodic_table::Element;
+
+use crate::ElementNr;
+
+pub struct Variation {
+    longest: Element
+}
+
+pub fn get_variations(elements: Vec<ElementNr>) -> Vec<Variation> {
+    let mut variations: Vec<Variation> = vec![];
+    
+    variations
+}

src/variations/mod.rs

@@ -0,0 +1 @@
+pub mod calculate;