mutable decl syntax change

std/static_string_map/static_string_map.hon

@@ -19,8 +19,8 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 		compile_error!("static string map has too many entries")
 	}
 
-	keys [N]mut []u8 = undefined
-	values [N]mut V = undefined
+	keys [N]mut []u8 := undefined
+	values [N]mut V := undefined
 
 	# assert no duplicate keys
 	for entries |entry, i| {
@@ -37,7 +37,7 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 	}
 
 	if N == 0 {
-		len_indexes [0]u32 = undefined
+		len_indexes [0]u32 := undefined
 		return StaticStringMap(V){
 			keys = keys[..],
 			values = values[..],
@@ -51,7 +51,7 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 	for 1..N |i| {
 		key :: keys[i]
 		value :: values[i]
-		j usize = i
+		j usize := i
 		while j > 0 and keys[j - 1].len > key.len : j -= 1 {
 			keys[j] = keys[j - 1]
 			values[j] = values[j - 1]
@@ -62,8 +62,8 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 
 	min_len u32 :: u32(keys[0].len)
 	max_len u32 :: u32(keys[N - 1].len)
-	len_indexes [usize(max_len) + 1]mut u32 = undefined
-	entry_index usize = 0
+	len_indexes [usize(max_len) + 1]mut u32 := undefined
+	entry_index usize := 0
 	for 0..=usize(max_len) |length| {
 		while entry_index < N and keys[entry_index].len < length : entry_index += 1 {}
 		len_indexes[length] = u32(entry_index)
@@ -81,10 +81,10 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 get func($V type, map @StaticStringMap(V), key []u8) ?V {
 	if (map.keys.len == 0 or key.len > maxval!(u32)) return null
 
-	length u32 = u32(key.len)
+	length u32 := u32(key.len)
 	if (length < map.min_len or length > map.max_len) return null
 
-	idx usize = usize(map.len_indexes[usize(length)])
+	idx usize := usize(map.len_indexes[usize(length)])
 	while idx < map.keys.len : idx += 1 {
 		candidate :: map.keys[idx]
 		if (candidate.len != key.len) return null