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#pragma once 
 
#include "typetraits.h" 
 
#include <util/system/types.h> 
 
#include <cstring> 
 
template <class T> 
using TIfPOD = std::enable_if_t<TTypeTraits<T>::IsPod, T*>;
 
template <class T> 
using TIfNotPOD = std::enable_if_t<!TTypeTraits<T>::IsPod, T*>;
 
template <class T> 
static inline TIfPOD<T> MemCopy(T* to, const T* from, size_t n) noexcept {
    if (n) { 
        memcpy(to, from, n * sizeof(T)); 
    } 
 
    return to; 
} 
 
template <class T> 
static inline TIfNotPOD<T> MemCopy(T* to, const T* from, size_t n) { 
    for (size_t i = 0; i < n; ++i) { 
        to[i] = from[i]; 
    } 
 
    return to; 
} 
 
template <class T> 
static inline TIfPOD<T> MemMove(T* to, const T* from, size_t n) noexcept {
    if (n) { 
        memmove(to, from, n * sizeof(T)); 
    } 
 
    return to; 
} 
 
template <class T> 
static inline TIfNotPOD<T> MemMove(T* to, const T* from, size_t n) { 
    if (to <= from || to >= from + n) { 
        return MemCopy(to, from, n); 
    } 
 
    //copy backwards 
    while (n) { 
        to[n - 1] = from[n - 1]; 
        --n; 
    } 
 
    return to; 
}