Lists Vectors in c++ and c# with copy assign insert AddRange 42

Learn how to #copy a chunk or #range of data from one list and vector and add to another #list and #vector #data #structures. How to #delete or #remove a range or chunk of data from a list and a vector in c plus plus and c sharp.

C++ Code:
#include ＜iostream＞ //for cout
#include ＜fstream＞ // for ofstream/ifstream
#include ＜string＞ //for ＜＜ and getline
#include ＜vector＞ //for vectors
#include＜list＞ //for lists
#include＜algorithm＞ //for find_if
#include ＜iterator＞ // for inserter

bool element_fullstop(const std::string &element)
{
if (!(element == "."))
{
return false; //predicate is a function that returns a boolean value.
}
return true;
}

int main(int argc, char *argv[])
{
std::ifstream input_file("test.txt");
std::ofstream output_file("test.txt.out");

//std::list＜std::string＞ elements;
//std::list＜std::string＞ arrange;
std::vector＜std::string＞ elements;
std::vector＜std::string＞ arrange;

std::string line;
for (int line_no = 0; std::getline(input_file, line); ++line_no)
{
for (size_t i = 0; i ＜ line.size(); i++)
{
elements.push_back(std::string(1, line[i]));
}
//elements.push_back(line);
}

//std::list＜std::string＞::iterator iter = elements.begin();
std::vector＜std::string＞::iterator iter = elements.begin();
for (; iter != elements.end(); ++iter)
{
std::cout ＜＜ (*iter);
output_file ＜＜ (*iter);
}

//std::list＜std::string＞::iterator stop = std::find_if(elements.begin(),
//elements.end(), element_fullstop);
std::vector＜std::string＞::iterator stop = std::find_if(elements.begin(),
elements.end(), element_fullstop);

if (stop == elements.end())
{
std::cout ＜＜ "element . not found" ＜＜ std::endl;
}
++stop;

//arrange.splice(arrange.begin(), elements, elements.begin(), stop);

//std::copy(elements.begin(), stop,
//std::inserter(arrange, arrange.begin()));//works with erase
//std::copy(elements.begin(), stop,std::back_inserter(arrange));//works with erase
//arrange.assign(elements.begin(), stop);//works with erase
arrange.insert(arrange.begin(), elements.begin(), stop);
elements.erase(elements.begin(), stop);

std::cout ＜＜ std::endl;
std::cout ＜＜ "picked up data for arrange:" ＜＜ std::endl;

//std::list＜std::string＞::iterator it = arrange.begin();
std::vector＜std::string＞::iterator it = arrange.begin();
for (; it != arrange.end(); ++it)
{
std::cout ＜＜ (*it);
output_file ＜＜ (*it);
}

if (input_file)
{
input_file.close();
output_file.close();
}
std::cin.get();
return 0;
}



C# Code:
using System;//for Console
using System.Collections.Generic;//for lists
using System.IO;//to use StreamReader

namespace lec2csharp
{
class Program
{
static bool ElementFullstop(string element)
{
if (!(element == "."))
{
return false;
}
return true;
}
static void Main(string[] args)
{
StreamReader input_file = new StreamReader("test.txt");
StreamWriter output_file = new StreamWriter("test.txt.out");

List＜string＞ elements = new List＜string＞();
List＜string＞ arrange = new List＜string＞();

string line = "";
for (int line_no = 1; (line = input_file.ReadLine()) != null; ++line_no)
{
for (int i = 0; i ＜ line.Length; i++)
{
elements.Add(Char.ToString(line[i]));
}
//elements.Add(line);
}

foreach (string iter in elements)
{
Console.Write(iter);
output_file.Write(iter);
}

int stop = elements.FindIndex(0, elements.Count, ElementFullstop);
if (stop == elements.Count)
{
Console.WriteLine("element . not found");
}
++stop;
//arrange.InsertRange(0, elements.GetRange(0, stop));
arrange.AddRange(elements.GetRange(0, stop));
elements.RemoveRange(0, stop);

Console.WriteLine();
Console.WriteLine("picked up data for arrange: ");

foreach (string iter in arrange)
{
Console.Write(iter);
output_file.Write(iter);
}

if (input_file != null)
{
input_file.Close();
output_file.Close();
}

Console.ReadLine();
}
}
}


#csharp #cplusplus #tutorial

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