Added various comments to the project.

gemla/src/bracket/mod.rs

@@ -8,9 +8,12 @@ use uuid::Uuid;
 //     directory: String
 // }
 
+/// Constructs a tree with a given height while simultaneously running a simulation on each node.
 fn build_tree(h: u32) -> Option<Box<tree::Tree>> {
 	let mut result: Option<Box<tree::Tree>> = None;
 
+	// Recursively building a tree and running the simulation after wards to ensure a bottom-up
+	// execution order.
 	if h != 0 {
 		result = Some(Box::new(tree::combine_trees(Uuid::new_v4(), build_tree(h - 1), build_tree(h - 1))));
 		match &result {
@@ -22,10 +25,14 @@ fn build_tree(h: u32) -> Option<Box<tree::Tree>> {
 	result
 }
 
+/// Generates a bracket tree and runs simulation against each node.
+/// 
+/// TODO: Explain reasoning for bracket system against genetic algorithm.
 pub fn run_bracket() {
 	let mut height = 1;
 	let mut tree: tree::Tree = *build_tree(height).expect("Error getting result from build_tree.");
 
+	// Building tree one node at a time, appending to the top.
 	loop {
 		println!("=========================================");
 		println!("Running bracket...");

gemla/src/constants/args.rs

@@ -1 +1,2 @@
+/// Corresponds to the DIRECTORY command line argument used in accordance with the clap crate.
 pub const DIRECTORY: &str = "DIRECTORY";

gemla/src/main.rs

@@ -6,13 +6,18 @@ extern crate clap;
 use clap::App;
 use std::fs::metadata;
 
+/// Runs a simluation of a genetic algorithm against a dataset.
+/// 
+/// Use the -h, --h, or --help flag to see usage syntax.
 fn main() {
+	// Command line arguments are parsed with the clap crate. And this program uses
+	// the yaml method with clap.
 	let yaml = load_yaml!("../cli.yml");
 	let matches = App::from_yaml(yaml).get_matches();
 
+	// Checking that the first argument <DIRECTORY> is a valid directory
 	let directory = matches.value_of(constants::args::DIRECTORY).unwrap();
 	let metadata = metadata(directory);
-
 	match &metadata {
 		Ok(m) if m.is_dir() == true => {
 			println!("{} is a valid directory!", directory);