diff --git a/src/types.rs b/src/types.rs
index d1500cc..7c73770 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -61,7 +61,7 @@ macro_rules! enum_flags {
     }) => {
 	
 	#[repr(transparent)]  //this seems dodgy to me
-	#[derive(Debug, Clone, PartialEq, Eq, Hash, Ord, PartialOrd, Default)]
+	#[derive(Debug, Clone, PartialEq, Eq, Hash, Ord, PartialOrd, Default, Copy)] //this has to be copy for the assignments to be ergonomic :/
 	pub struct $name(libc::c_int);
 
 	impl $name {
@@ -73,15 +73,25 @@ macro_rules! enum_flags {
 	    {
 		Self(int)
 	    }
-	    pub const fn as_int(&self) -> libc::c_int
+	    pub const fn as_int(self) -> libc::c_int
 	    {
 		self.0
 	    }
 
-	    pub const fn has(&self, other: &Self) -> bool
+	    pub const fn has(self, other: Self) -> bool
 	    {
 		(self.0 & other.0) == other.0
 	    }
+
+	    pub const fn add(self, other: Self) -> Self
+	    {
+		Self(self.0 | other.0)
+	    }
+
+	    pub const fn remove(self, other: Self) -> Self
+	    {
+		Self((self.0 | other.0) ^ other.0)
+	    }
 	}
 
 	impl From<libc::c_int> for $name