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#include <bits/stdc++.h>
using namespace std;

int main() {
    // 1. vector (Array dinámico)
    std::vector<int> v = {1, 2, 3};
    v.push_back(4); v.pop_back();
    v.insert(v.begin(), 0); v.erase(v.begin());
    std::cout << "Vector first element: " << v.front() << "\n";
    std::cout << "Vector last element: " << v.back() << "\n";

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// this is a way to test Generic Repo that uses EF. Notice, I'm not advocating for generic repos.
using FluentAssertions;
using Microsoft.EntityFrameworkCore;

public static class MyDebug
{
    public static List<string> Sql {get; set; } = new();
    public static void Capture(string query)
    {
        if (query.Contains("Execute")) 

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namespace efsetp;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
using Microsoft.EntityFrameworkCore.Metadata;
using Moq;

public class Customer
{
    public int CustomerId { get; set; }

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@page "/"
Tics per second: <input type="range" min="1" max="500" @bind="@CurrentValue" class="slider" id="myRange"> @CurrentValue
<br/><br/>
<div style="width:500px; height:10px; background-color: blue; position: relative;">
    <div class="ball" style="@position_txt"></div>
</div>
<br/><br/>
<span>@DateTime.Now.ToString("HH:mm:ss")</span>
<span>Number of renders: @nRenders.ToString("N0")</span>
<br/><br/>

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    [Parameter]
    public IEnumerable<object> DataSource {set; get; }

    private IEnumerable<object> Cache {set; get; } = null;
    List<MyColumn> Columns = new List<MyColumn>();
    public void AddColumn(MyColumn column)
    {
        var seg = DataSource;
        Cache ??= DataSource.ToList();
        DataSource = Cache;