feat: selected's children

src/core/observable.zig

@@ -1,15 +1,20 @@
 pub fn Observable(T: type) type {
     return struct {
+        allocator: std.mem.Allocator,
         observers: std.ArrayList(*const Observer(T)),
 
         const Self = @This();
         pub fn init(allocator: std.mem.Allocator) Self {
             return .{
+                .allocator = allocator,
                 .observers = std.ArrayList(*const Observer(T)).init(allocator),
             };
         }
 
         pub fn deinit(self: *Self) void {
+            for(self.observers)|o| {
+                self.allocator.destroy(o);
+            }
             self.observers.deinit();
         }