atsvetkov

cinst wixtoolset -y
cinst firefox -y

atsvetkov

<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp1.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <Compile Include="**\*.cs" />
    <EmbeddedResource Include="**\*.resx" />
  </ItemGroup>
  <ItemGroup>

atsvetkov

public static class IntegerParser
{
    private const int MinDigit = '0';
    private const int MaxDigit = '9';

    public static bool TryParse(object number, out int result)
    {
        if (number is int)
        {
            result = (int)number;

atsvetkov

using System;

class Program
{
    static void Main(string[] args)
    {
        foreach (var number in new object[] { 123, "2017", "-1", "1a2b3c", '5' })
        {
            try
            {

atsvetkov

public static bool TryParse(object number, out int result)
{
    switch (number)
    {
        case int i:
            result = i;
            return true;
        case string s:
            return ParseString(s, out result);
        default:

atsvetkov

public static bool TryParse(object number, out int result)
{
    switch (number)
    {
        case int i:
            result = i;
            return true;
        case string s:
            bool ParseString(string str, out int res)
            {

atsvetkov

try
{
    if (IntegerParser.TryParse(number, out int result))
    {
        Console.WriteLine($"Parsed {number.GetType()} {number}, got {result}");
    }
    else
    {
        Console.WriteLine($"Could not parse {number.GetType()} {number}");
    }

atsvetkov

public class ParsingResult
{
    public bool IsSuccessful { get; set; }
    public int Result { get; set; }
}

atsvetkov

public static ParsingResult TryParse(object number)

atsvetkov

public static (bool success, int result) TryParse(object number)
{
    switch (number)
    {
        case int i:
            return (true, i);
        case string s:
            (bool isParsed, int value) ParseString(string str)
            {
                var res = 0;