i remembered how to rust multifile WOO

src/flags.rs

@@ -0,0 +1,19 @@
+use clap::Parser;
+
+#[derive(Parser, Debug, Clone)]
+pub struct Flags {
+    #[arg(short, long, default_value_t = false)] 
+    pub debug: bool,
+
+    #[arg(long, default_value_t = 4)] 
+    pub smallest_note: usize,
+
+    #[arg(long, default_value_t = 44100)] 
+    pub sample_rate: usize,
+}
+
+impl Flags {
+    pub fn new() -> Flags {
+        Flags::parse()
+    }
+}