Use HashSet for available layout names to avoid monitor-layout dup

Cargo.lock

@@ -192,7 +192,7 @@ dependencies = [
 
 [[package]]
 name = "swayout"
-version = "1.1.0"
+version = "1.1.1"
 dependencies = [
  "kdl",
  "serde",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "swayout"
-version = "1.1.0"
+version = "1.1.1"
 edition = "2021"
 description = "A tool to configure sway outputs"
 authors = ["Stephen Byrne"]

src/lib.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::collections::{HashMap, HashSet};
 
 mod config;
 use crate::config::{get_config, Config, Layout, OutputConfig};
@@ -11,18 +11,17 @@ use crate::sway::{apply_outputs, get_outputs, Output};
 /// for which all outputs are available,
 /// one for each monitor defined in the configuration file (for using just that monitor),
 /// and one for each available output that is not a configured monitor (for using just that output).
-fn get_layouts() -> Vec<String> {
+fn get_layouts() -> HashSet<String> {
     let available_outputs = get_outputs();
     let config = get_config();
 
-
-    let mut layout_names: Vec<String> = Vec::new();
+    let mut layout_names: HashSet<String> = HashSet::new();
 
     // Add each layout defined in the config file for which all outputs are available
     get_available_layouts(&config, &available_outputs)
         .iter()
         .for_each(|layout| {
-            layout_names.push(String::from(&layout.name));
+            layout_names.insert(String::from(&layout.name));
         });
 
     // add each individual output (by monitor name if the monitor is defined, else by output name)
@@ -35,9 +34,9 @@ fn get_layouts() -> Vec<String> {
                     && monitor.serial == output.serial
             });
         if let Some(monitor) = monitor_opt {
-            layout_names.push(String::from(&monitor.name));
+            layout_names.insert(String::from(&monitor.name));
         } else {
-            layout_names.push(String::from(&output.name));
+            layout_names.insert(String::from(&output.name));
         }
     });