reworked Client list

Cargo.toml

@@ -10,4 +10,5 @@ edition = "2018"
 nix = "0.19.1"
 x11 = {version = "2.18.2", features = ["xlib"] }
 log = "0.4.13"
+weak-table = "0.3.0"
 simple_logger = "1.11.0"

rustfmt.toml

@@ -1,3 +1,2 @@
-hard_tabs = true
 imports_granularity = "Crate"
 wrap_comments = true

src/main.rs

@@ -1,6 +1,8 @@
-use std::io::Result;
 use log::info;
+use std::io::Result;
 
+//mod state;
+mod util;
 mod wm;
 
 #[allow(dead_code)]
@@ -25,12 +27,11 @@ unsafe extern "C" fn xlib_error_handler(
     }
 }
 
-
 fn main() -> Result<()> {
-	simple_logger::SimpleLogger::new().init().unwrap();
-	info!("Hello, World!");
+    simple_logger::SimpleLogger::new().init().unwrap();
+    info!("Hello, World!");
 
-	wm::WMState::init().run();
+    wm::WMState::init().run();
 
     Ok(())
 }

src/util.rs

@@ -0,0 +1,24 @@
+use std::hash::{BuildHasherDefault, Hasher};
+
+#[derive(Debug, Clone, Copy, Default)]
+pub struct IdentityHasher(usize);
+
+impl Hasher for IdentityHasher {
+    fn finish(&self) -> u64 {
+        self.0 as u64
+    }
+
+    fn write(&mut self, _bytes: &[u8]) {
+        unimplemented!("IdentityHasher only supports usize keys")
+    }
+
+    fn write_u64(&mut self, i: u64) {
+        self.0 = i as usize;
+    }
+
+    fn write_usize(&mut self, i: usize) {
+        self.0 = i;
+    }
+}
+
+pub type BuildIdentityHasher = BuildHasherDefault<IdentityHasher>;