How to remove all but the vector function of ArduinoSTL - c++

Question

Issue
I did a C++ program running on an Arduino UNO.
I'm using ArduinoSTL only for his vector functionality, but it is using 459 bytes of the Arduino's RAM (23% of wasted RAM is way too much for what I do), and it takes 5 seconds more to compile with this library (which is annoying).
What I want to do
I want to be able to do change the size of arrays, maybe with vectors.
I don't want to use libraries that wastes RAM for nothing.
What I've though of doing
I though that, maybe I could remove everything but the vector function(s) of ArduinoSTL, so it will compile faster and take less RAM.
I attempted to do it.
In ArduinoSTL's directory, there is a lot of .cpp files with one of them named Vector.cpp.
My solution was to erase everything except Vector.cpp.
It didn't worked.

Answer 1

Solution 1
Use regular arrays!
Using a big regular array can be better sometime because ArduinoSTL takes a lot of memory and removing lets enough free space to use such simple arrays and the compiling is way faster.
In what I was doing, I didn't really needed a vector. A big array was enough.
Solution 2
Use stdlib.h!
It provides some functions such as malloc(), calloc(), realloc() and free().
The main advantage is that it is standard and is not only for Arduino.
Here is a piece of code in a regular C++ coding to show how to use it.
#include <stdlib.h> //Mandatory for memory manipulation
#include <stdio.h> //Used to for the command prompt
int main(){
uint8_t* MemBlock=nullptr; //Just a pointer pointing to nothing
int BlockSize=0; //The size of the block in bytes
bool Condition=true; //The condition for the if() statement
if(Condition){
BlockSize=64;
MemBlock=(uint8_t)malloc(BlockSize); //Allocates a Memory Block
uint8_t* P=MemBlock; //Defines a pointer that points to same location as the MemBlock pointer
for(int i=0;i<BlockSize;i++){
*P=i*23%101; //Change the pointed value by P
P++; //Moves to the next value (of MemBlock)
}
}else{
BlockSize=256;
MemBlock=(uint8_t)malloc(BlockSize); //Allocates a Memory Block
for(int i=0;i<BlockSize;i++){
MemBlock[i]=i*17%23; //Fills the Memory Block with values
}
}
uint8_t* P=MemBlock; //Defines a pointer that points to same location as the MemBlock pointer
for(int i=0;i<BlockSize;i++){
std::cout<<*P++<<' '; //Displays all values of the Memory Block, *P++ is same as doing *P then P++
}
std::cout<<'\n'; //ends the line to show it
free(MemBlock); //Deallocates the Memory Block to prevent "memory leaks"
return 0;
}
The Arduino IDE doesn't require to include the library as it is already included by default.
Here is a link for more details about the library: stdlib.h - C++ reference
If anyone know a fast vector library, then feel free to share!