public static void Main(string[] args)
{
MyString firstMyString = new MyString(new char[] { 'a', 'b', 'c' });
MyString secondMyString = new MyString('x', 'y', 'z');
Console.WriteLine("First string: " + firstMyString);
Console.WriteLine("Second string: " + secondMyString);
Console.WriteLine("Operation '+' with first string and second string: " + firstMyString + secondMyString);
Console.WriteLine("Function 'Concat' with first string and second string: " + firstMyString.Concat(secondMyString));
secondMyString = firstMyString;
Console.WriteLine("Second string: " + secondMyString);
Console.WriteLine("Operation '==' with first string and second string: " + (firstMyString == secondMyString));
Console.WriteLine("Function 'GetHashCode' with first string: " + firstMyString.GetHashCode());
Console.WriteLine("Function 'ToStringBuilder' with first string: " + firstMyString.ToStringBuilder());
Console.WriteLine("Function 'ToCharArray' with first string: " + firstMyString.ToCharArray());
Console.WriteLine("Function 'IndexOf' with first string with 'c' character: " + firstMyString.IndexOf('c'));
}
public static void Main(string[] args)
{
Console.WriteLine("The application demonstrates the class 'MyString' using." + Environment.NewLine);
MyString myString = new MyString(new char[] { 'a', 'b', 'c' });
MyString anotherMyString = new MyString('d', 'e', 'f');
Console.WriteLine("First string: " + myString);
Console.WriteLine("Second string: " + anotherMyString);
Console.WriteLine("Using '+' operation for first string and second string: " + myString + anotherMyString);
Console.WriteLine("Using 'Concat' function for first string and second string: " + myString.Concat(anotherMyString));
anotherMyString = myString;
Console.WriteLine("Second string: " + anotherMyString);
Console.WriteLine("Using '==' operation for first string and second string: " + (myString == anotherMyString));
Console.WriteLine("Using 'GetHashCode' function for first string: " + myString.GetHashCode());
Console.WriteLine("Using 'IndexOf' function for first string with 'b' character: " + myString.IndexOf('b'));
Console.WriteLine("Using 'ToCharArray' function for first string: " + myString.ToCharArray());
Console.WriteLine("Using 'ToStringBuilder' function for first string: " + myString.ToStringBuilder());
}
private static void Main()
{
Console.WriteLine("Greetings! In this program you will see MyString class demonstration.");
Console.WriteLine();
Console.WriteLine("Class has three constructors.");
Console.WriteLine("First constructor takes char array as a parameter: MyString(chars).");
char[] chars = { 'H', 'e', 'l', 'l', 'o' };
Console.Write("Char array has: ");
foreach (char ch in chars)
{
Console.Write(ch + ", ");
}
MyString myString = new MyString(chars);
Console.WriteLine($"Value of MyString instance is: {myString}");
Console.WriteLine();
Console.WriteLine("Second constructor takes char array from start index in array to length: MyString(char, 2, 3).");
myString = new MyString(chars, 2, 3);
Console.WriteLine($"New value of MyString instance is: {myString}");
Console.WriteLine();
Console.WriteLine("Third constructor takes specified char as first parameter and integer as a count: MyString('a', 5).");
myString = new MyString('a', 5);
Console.WriteLine($"New value of MyString instance is: {myString}");
Console.WriteLine();
Console.WriteLine("To get a specified char from MyString instance by index use indexer: myString[int index].");
myString = new MyString(chars);
Console.WriteLine($"Value of MyString instance: {myString}");
Console.WriteLine($"The char form MyString instance by index 1 'myString[1]': {myString[1]}");
Console.WriteLine();
Console.WriteLine("Static Concat method has 4 overloads, can take as paramenters: one, two, three object instances or object array.");
object obj = "Hi ";
Console.WriteLine($"Object instance: {obj.ToString()}");
myString = MyString.Concat(obj);
Console.WriteLine($"myString = MyString.Concat(obj): {myString}");
object obj1 = 4;
Console.WriteLine($"Second object instance: {obj1.ToString()}");
myString = MyString.Concat(obj, obj1);
Console.WriteLine($"myString = MyString.Concat(obj, obj1): {myString}");
object obj2 = " times";
Console.WriteLine($"Third object instance: {obj2.ToString()}");
myString = MyString.Concat(obj, obj1, obj2);
Console.WriteLine($"myString = MyString.Concat(obj, obj1, obj2): {myString}");
object obj3 = " again";
object[] objects =
{
obj,
obj1,
obj2,
obj3
};
myString = MyString.Concat(objects);
Console.WriteLine($"myString = MyString.Concat(objects): {myString}");
Console.WriteLine();
Console.WriteLine("Concat method has same 4 overloads with MyString type.");
Console.WriteLine();
Console.WriteLine("Contains method defines if MyString instance contains another MyString instance: bool Contains(MyString value).");
MyString ms = "times";
Console.WriteLine($"'{myString}' contains '{ms}': {myString.Contains(ms)}");
Console.WriteLine();
Console.WriteLine("Static method MyString.Copy(MyString value) returns a copy of value instance.");
MyString copy = MyString.Copy(myString);
Console.WriteLine($"Value of myString: {myString}");
Console.WriteLine($"Value of copy: {copy}");
Console.WriteLine($"Object.ReferenceEquals(myString, copy): {object.ReferenceEquals(myString, copy)}");
Console.WriteLine();
char[] destination = new char[4];
myString.CopyTo(5, destination, 0, 4);
Console.WriteLine("Void CopyTo(int sourceIndex, char[] destintion, int destionationIndex, int count) copies specified part of chars in MyString instance to char array.");
Console.Write("After 'myString.CopyTo(5, destination, 0, 4)' destination array contents: ");
foreach (char ch in destination)
{
Console.Write(ch + ", ");
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("EndsWith method serves to find out if MyString instance ends with another MyString instance: bool EndsWith(value).");
Console.WriteLine($"Value of myString: {myString}");
MyString addString = "again";
Console.WriteLine($"Value of addString: {addString}");
Console.WriteLine($"myString ends with addString - myString.EndsWith(addString): {myString.EndsWith(addString)}");
Console.WriteLine();
Console.WriteLine("There is three overloads for IndexOf method:");
Console.WriteLine($"int IndexOf(char) - myString.IndexOf('i'): {myString.IndexOf('i')}");
Console.WriteLine($"int IndexOf(char, startIndex) - myString.IndexOf('i', 5): {myString.IndexOf('i', 5)}");
Console.WriteLine($"int IndexOf(char, startIndex, count) - myString.IndexOf('i', 7, 4): {myString.IndexOf('i', 7, 4)}");
Console.WriteLine();
Console.WriteLine("Three overloads for IndexOf method taking MyString instance as a parameter:");
Console.WriteLine($"myString.IndexOf(addString): {myString.IndexOf(addString)}");
Console.WriteLine($"myString.IndexOf(addString, 11): {myString.IndexOf(addString, 11)}");
Console.WriteLine($"myString.IndexOf(addString, 10, 5): {myString.IndexOf(addString, 10, 5)}");
Console.WriteLine();
Console.WriteLine("There is three overloads for IndexOfAny method taking char array as a parameter to search:");
chars = new char[] { 't', 'H', 'i' };
Console.Write("Char array named 'chars' has: ");
foreach (char ch in chars)
{
Console.Write(ch + ", ");
}
Console.WriteLine();
Console.WriteLine($"myString.IndexOfAny(chars): {myString.IndexOfAny(chars)}");
Console.WriteLine($"myString.IndexOfAny(chars, 3): {myString.IndexOfAny(chars, 3)}");
Console.WriteLine($"myString.IndexOfAny(chars, 7, 5): {myString.IndexOfAny(chars, 7, 5)}");
Console.WriteLine();
Console.WriteLine("Insert method takes an integer as a start index and MyString value to insert to calling MyString instance. Reternes new MyString instance:");
MyString insertMS = "again ";
Console.WriteLine($"Value to insert: '{insertMS}'");
myString = myString.Insert(11, insertMS);
Console.WriteLine($"myString = myString.Insert(11, insertMS): {myString}");
Console.WriteLine();
Console.WriteLine("There is three overloads for LastIndexOf method:");
Console.WriteLine($"myString.LastIndexOf('g'): {myString.LastIndexOf('g')}");
Console.WriteLine($"myString.LastIndexOf('g', 16): {myString.LastIndexOf('g', 16)}");
Console.WriteLine($"myString.LastIndexOf('g', 16, 3): {myString.LastIndexOf('g', 16, 3)}");
Console.WriteLine("Three overloads for LastIndexOf method taking MyString instance as a parameter:");
Console.WriteLine($"myString.LastIndexOf(addString): {myString.LastIndexOf(addString)}");
Console.WriteLine($"myString.LastIndexOf(addString, 11): {myString.LastIndexOf(addString, 16)}");
Console.WriteLine($"myString.LastIndexOf(addString, 10, 5): {myString.LastIndexOf(addString, 16, 5)}");
Console.WriteLine();
Console.WriteLine("There is three overloads for LastIndexOfAny method taking char array as a parameter to search:");
Console.Write("Char array named 'chars' has: ");
foreach (char ch in chars)
{
Console.Write(ch + ", ");
}
Console.WriteLine();
Console.WriteLine($"myString.LastIndexOfAny(chars): {myString.LastIndexOfAny(chars)}");
Console.WriteLine($"myString.LastIndexOfAny(chars, 3): {myString.LastIndexOfAny(chars, 3)}");
Console.WriteLine($"myString.LastIndexOfAny(chars, 7, 5): {myString.LastIndexOfAny(chars, 7, 5)}");
Console.WriteLine();
Console.WriteLine("Remove method has two overloads - remove from start index to end of MyString instance and remove from start count chars. Reterns new MyString instance:");
myString = myString.Remove(10, 6);
Console.WriteLine($"myString = myString.Remove(10, 6): '{myString}'");
myString = myString.Remove(10);
Console.WriteLine($"myString = myString.Remove(10): '{myString}'");
Console.WriteLine();
Console.WriteLine("There is two overloads for Replace method - first replaces old char for new char int whole MyString instance ind second replaces old MyString value to new MyString value. Returns new MyString instance:");
myString = "Hi bi mi bi";
Console.WriteLine($"Value of myString: '{myString}'");
myString = myString.Replace('i', 'e');
Console.WriteLine($"Value after myString = myString.Replace('i', 'e'): '{myString}'");
MyString oldValue = "be";
Console.WriteLine($"MyString instance to be changed (oldValue): '{oldValue}'");
MyString newValue = "big";
Console.WriteLine($"MyString instance which is to replace the old value (newValue): '{newValue}'");
myString = myString.Replace(oldValue, newValue);
Console.WriteLine($"After myString = myString.Replace(oldValue, newValue): '{myString = myString.Replace(oldValue, newValue)}'");
Console.WriteLine("StartsWith method defines if MyString instance starts with specified MyString value:");
MyString startsWith = "He";
Console.WriteLine($"MyString instance to compare 'startWith' named: '{startsWith}'");
Console.WriteLine($"myString.StartsWith(startsWith): {myString.StartsWith(startsWith)}");
Console.WriteLine();
Console.WriteLine("There is two overloads for SubMyString method - from start index to end of MyString instance and from start index to count. Returns new MyString instance:");
Console.WriteLine($"myString.SubMyString(3): '{myString.SubMyString(3)}'");
Console.WriteLine($"myString.SubMyString(3, 3): '{myString.SubMyString(3, 3)}'");
Console.WriteLine();
Console.WriteLine($"ToLower method returns new MyString instance with all lower case chars: '{myString.ToLower()}'");
Console.WriteLine($"And ToUpper method with all upper case chars: '{myString.ToUpper()}'");
Console.WriteLine();
Console.WriteLine($"ToCharArray method returns char array with all chars form MyString instance: chars = myString.ToCharArray(){chars = myString.ToCharArray()}");
Console.Write("Chars array consists of: ");
foreach (char ch in chars)
{
Console.Write(ch + ", ");
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("There is implicit casts from MyString to string, from string to MyString, from MyString to StringBuilder, from StringBuilder to MyString.");
Console.WriteLine();
Console.WriteLine("Also ToString(), GetHashCode() overrided methods, IEquatable<MyString>, IComparable<MyString> and IComparable implementation, '==' and '!=' operatiors.");
MyString ms1 = "Hello";
MyString ms2 = "Hello";
Console.WriteLine($"MyString instance named ms1: '{ms1}'");
Console.WriteLine($"MyString instance named ms2: '{ms2}'");
Console.WriteLine($"Object.ReferenceEquals(ms1, ms2): {object.ReferenceEquals(ms1, ms2)}");
Console.WriteLine($"ms1.Equals(ms2): {ms1.Equals(ms2)}");
Console.WriteLine();
}
