diff --git a/src/arrays.c b/src/arrays.c
index 6cf1c03..09f7860 100644
--- a/src/arrays.c
+++ b/src/arrays.c
@@ -1,5 +1,6 @@
 #include "arrays.h"
 #include <stdint.h>
+#include <stdlib.h>
 
 bool bool_array_get(const bool_array *array, int32_t index) {
     if (index >= 0 && index < array->length) {
@@ -280,12 +281,23 @@ void float_array_set(float_array *array, const float value, int32_t index) {
 
     if (index == -1) {
         array->items[array->length - 1] = value;
+        array->length++;
         return;
     }
 
     array->items[index] = value;
 }
 
+void float_array_allocate(float_array *array, int32_t capacity) {
+    array->items = calloc(capacity, sizeof(float));
+    array->capacity = capacity;
+}
+
+void float_array_init(float_array *array) {
+    array->capacity = 0;
+    array->length = 0;
+}
+
 double double_array_get(const double_array *array, int32_t index) {
     if (index >= 0 && index < array->length) {
         return array->items[index];
diff --git a/src/arrays.h b/src/arrays.h
index 082ac58..18a146a 100644
--- a/src/arrays.h
+++ b/src/arrays.h
@@ -12,6 +12,7 @@ typedef struct {
 } bool_array;
 
 bool bool_array_get(const bool_array *array, int32_t index);
+void bool_array_set(bool_array *array, const bool value, int32_t index);
 
 // --- Char (Strings/Bytes) ---
 typedef struct {
@@ -21,6 +22,7 @@ typedef struct {
 } char_array;
 
 char char_array_get(const char_array *array, int32_t index);
+void char_array_set(char_array *array, const char value, int32_t index);
 
 // --- Signed Integers ---
 typedef struct {
@@ -30,6 +32,7 @@ typedef struct {
 } int8_array;
 
 int8_t int8_array_get(const int8_array *array, int32_t index);
+void int8_array_set(int8_array *array, const int8_t value, int32_t index);
 
 typedef struct {
     int16_t *items;
@@ -38,6 +41,7 @@ typedef struct {
 } int16_array;
 
 int16_t int16_array_get(const int16_array *array, int32_t index);
+void int16_array_set(int16_array *array, const int16_t value, int32_t index);
 
 typedef struct {
     int32_t *items;
@@ -46,6 +50,7 @@ typedef struct {
 } int32_array;
 
 int32_t int32_array_get(const int32_array *array, int32_t index);
+void int32_array_set(int32_array *array, const int32_t value, int32_t index);
 
 typedef struct {
     int64_t *items;
@@ -54,6 +59,7 @@ typedef struct {
 } int64_array;
 
 int64_t int64_array_get(const int64_array *array, int32_t index);
+void int64_array_set(int64_array *array, const int64_t value, int32_t index);
 
 // --- Unsigned Integers ---
 typedef struct {
@@ -63,6 +69,7 @@ typedef struct {
 } uint8_array;
 
 uint8_t uint8_array_get(const uint8_array *array, int32_t index);
+void uint8_array_set(uint8_array *array, const uint8_t value, int32_t index);
 
 typedef struct {
     uint16_t *items;
@@ -71,6 +78,7 @@ typedef struct {
 } uint16_array;
 
 uint16_t uint16_array_get(const uint16_array *array, int32_t index);
+void uint16_array_set(uint16_array *array, const uint16_t value, int32_t index);
 
 typedef struct {
     uint32_t *items;
@@ -79,6 +87,7 @@ typedef struct {
 } uint32_array;
 
 uint32_t uint32_array_get(const uint32_array *array, int32_t index);
+void uint32_array_set(uint32_array *array, const uint32_t value, int32_t index);
 
 typedef struct {
     uint64_t *items;
@@ -87,6 +96,7 @@ typedef struct {
 } uint64_array;
 
 uint64_t uint64_array_get(const uint64_array *array, int32_t index);
+void uint64_array_set(uint64_array *array, const uint64_t value, int32_t index);
 
 // --- Floating Point ---
 typedef struct {
@@ -96,6 +106,9 @@ typedef struct {
 } float_array;
 
 float float_array_get(const float_array *array, int32_t index);
+void float_array_set(float_array *array, const float value, int32_t index);
+void float_array_allocate(float_array *array, int32_t capacity);
+void float_array_init(float_array *array);
 
 typedef struct {
     double *items;
@@ -104,5 +117,6 @@ typedef struct {
 } double_array;
 
 double double_array_get(const double_array *array, int32_t index);
+void double_array_set(double_array *array, const double value, int32_t index);
 
 #endif