More or less valid C++ syntax for aensidhe example

example.cpp

// Source: https://aensidhe.ru/blog/readonlyspan-readonlysequence-c++
template<class TElement>
class Parser {
private:
  const IMsgPackParser<TElement> elementParser_;
  
  template<template<class> Container>
  void Read(const Container<byte> & source, Span<TElement> & array, size_t & readSize) {
    for(size_t i = 0u; i != array.Length(); ++i) {
      size_t temp;
      array[i] = elementParser_.Parse(source.Slice(readSize), temp);
      readSize += temp;
    }
  }
};