Removing Function Pointers to Optimize Performance

## Enhancement

In Go, the use of function pointers can introduce additional performance overhead. Function pointers, while powerful and flexible, can lead to increased execution time and resource consumption due to the way they are handled at runtime.

Here is a simple test.

```
package main

func square(x int) int {
return x * x
}

var squareFunc func(x int) int = square

func main() {
a := 11
square(a)
// squareFunc(a)
}
```

You can see the difference assembles between function pointer and no function pointer.

https://godbolt.org/z/M6dTErT43

### No Function Pointers

### Function Pointers