Added more functions to stateContents type, removed append because I don't think I need it

stateContents.go

@@ -4,8 +4,19 @@ import "slices"
 
 type stateContents []int // Represents the contents of the current state - character classes can have multiple contents, which is why it is represented as a slice
 
-func newContents() stateContents {
+func newContents(data ...int) stateContents {
 	toReturn := stateContents{}
+	for _, i := range data {
+		toReturn = append(toReturn, i)
+	}
+	return toReturn
+}
+
+func rune2Contents(data []rune) stateContents { // Convert a rune slice into a stateContents type, then return it. The runes are simply cast to ints.
+	toReturn := newContents()
+	for _, r := range data {
+		toReturn = append(toReturn, int(r))
+	}
 	return toReturn
 }
 
@@ -13,9 +24,3 @@ func newContents() stateContents {
 func (c stateContents) contains(val int) bool {
 	return slices.Contains(c, val)
 }
-
-// Appends val to c
-func (c *stateContents) append(val int) {
-	*c = append(*c, val)
-	return
-}