public void ShouldReturnCounterNullForClear()
{
var d = new Dictionary<string, int>();
d.Add("cats", 12);
d.Add("dogs", 133);
d.Clear();
Assert.Equal(0, d.Count);
}
static void Main(string[] args)
{
var namesAndAges = new Dictionary<string, int>/*(StringComparer.CurrentCultureIgnoreCase)*/
{
{"Jeremy", 35}
};
namesAndAges.Add("Josh", 25);
namesAndAges["Kristin"] = 39;
//namesAndAges.Add("Jeremy", 30); // an exception
namesAndAges["Jeremy"] = 30;
if (namesAndAges.ContainsKey("Caleb"))
{
var foo = namesAndAges["Caleb"]; //
}
foreach (var kvp in namesAndAges)
{
//kvp.Key
//kvp.Value
}
foreach (var key in namesAndAges.Keys)
{
}
foreach (var value in namesAndAges.Values)
{
}
var count = namesAndAges.Count;
if (namesAndAges.ContainsKey("Josh"))
{
namesAndAges.Remove("Josh");
}
namesAndAges.Clear();
Console.ReadLine();
}
static void Main(string[] args)
{
Dictionary<int, Person> dic = new Dictionary<int, Person>();
Dictionary<string, Person> dic2 = new Dictionary<string, Person>();
Person p1 = new Person("Frey");
Person p2 = new Person("Leon");
dic.Add(p1.PersonId, p1);
dic.Add(p2.PersonId, p2);
foreach (var item in dic)
{
Console.WriteLine(item.Key + " " + item.Value.Name);
}
dic2.Add("Frey", new Person());
dic2.Add("Leon", new Person());
foreach (var item in dic2)
{
Console.WriteLine(item.Key + " " + item.Value.PersonId);
}
if (dic2.ContainsKey("Leon"))
{
Console.WriteLine("Key Leon Exists");
}
Console.WriteLine("Delete Dictionary");
dic.Clear();
Console.WriteLine();
Console.WriteLine("");
foreach (var item in dic)
{
Console.WriteLine(item.Key + " " + item.Value.Name);
}
}
static void Main(string[] args)
{
Dictionary<char, string> certifications = new Dictionary<char, string>();
certifications.Add('P', "Passenger transport");
certifications.Add('H', "Hazardous materials");
certifications.Add('N', "Tank vehicles (liquids in bulk)");
certifications.Add('T', "Double/Triple trailers");
ShowCertifications(certifications);
//search for certfications by key and confirm
string theValue;
//try get value
//uses the out
certifications.TryGetValue('H', out theValue);
Console.WriteLine(theValue);
if (certifications.ContainsKey('P'))
Console.WriteLine("Has certfication 'P'");
//check certification for a specific value and confirm
if (certifications.ContainsValue("Double/Triple trailers"))
Console.WriteLine("Has certification 'T'");
//remove certification 'T' by key.
certifications.Remove('T');
if (!certifications.ContainsValue("Double/Triple trailers"))
Console.WriteLine("No longer has certification 'T'");
//remove all certifications
certifications.Clear();
if (certifications.Count == 0)
Console.WriteLine("All certifications removed");
Console.ReadLine();
}
public static void Main(string[] args)
{
Dictionary<string,int> dict=new Dictionary<string,int>();
dict.Add("one",1);
dict.Add("two",2);
dict.Add("three",3);
dict.Add("four",4);
dict.Remove("one");
Console.WriteLine ("Before contains");
Console.WriteLine(dict.ContainsKey("dsaf"));
Console.WriteLine("Key Value Pairs after Dictionary related operations:\n");
foreach (var pair in dict)
{
Console.WriteLine("{0}, {1}",
pair.Key,
pair.Value);
}
dict.Clear ();
List<string> strList = new List<string> ();
strList.Add ("one");
strList.Add ("two");
strList.Add ("three");
strList.Add ("four");
strList.Add ("five");
strList.Insert (3, "great");
string[] newList = new string[3]{ "ten", "eleven", "twelve" };
strList.AddRange (newList);
strList.InsertRange (3, newList);
Console.WriteLine ("Output after all list related operations i.e. add, insert, addrange, insertrange,remove\n");
Console.WriteLine ("The list");
foreach (var i in strList)
Console.WriteLine (i);
}
public void ChecksIfClearFunctionWorks()
{
var data = new Dictionary<string, int> { { "first", 2 }, { "second", 3 } };
data.Clear();
Assert.Equal(0, data.Count);
}
