public MainWindow()
{
InitializeComponent();
var book1 = new Book("J.R.R. Tolkien", "The Lord of the Rings");
var book2 = new Book("Patrick Rothfuss", "Name of the Wind");
// For the next item "targetBucket" ("Frank Herbert".GetHashCode() % 7) collides with the one for the book1.
// We will store the book3 in the first available slot in "entries" array storing the old collided entry index in the new entry "next" property.
// Then we replace buckets[targetBucket] value with the new entry index in the Entries array.
var book3 = new Book("Frank Herbert", "Dune");
//var book4 = new Book("Iain M. Banks", "Consider Phlebas");
//var book5 = new Book("Isaac Asimov", "Foundation");
//var book6 = new Book("Arthur Clarke", "2001: Space Odyssey");
// For a five-item-sized dictionary .NET provides seven buckets.
var dict = new Dictionary <string, Book>(5)
{
{ book1.Author, book1 },
{ book2.Author, book2 },
{ book3.Author, book3 },
//{ book4.Author, book4},
//{ book5.Author, book5},
//{ book6.Author, book6},
};
//dict.Remove(book2.Author);
//dict.Remove(book5.Author);
var extractor = new DictionaryMetadataExtractor <string, Book>();
metadata = extractor.ExtractMetadata(dict);
this.DrawVisualization(metadata);
}
public MainWindow()
{
InitializeComponent();
var key = new GoodButMutableTestRefKey(3);
// For a dictionaties with the size from 1 to 3 items, the number of buckets equals 3.
var dictWithMutableKey = new Dictionary <GoodButMutableTestRefKey, string>
{
{ key, "Hello!" }
};
// Mutate the key object. This affects both the GetHashCode() return value and Equals(obj) equality test.
key.Key = 1;
try
{
var obj1 = dictWithMutableKey[key];
}
catch (KeyNotFoundException)
{
this.LookupByTheWrongBucket.Content = "(GetHashCode() % buckets.Length) returns \"targetBucket\" 1 instead of 0";
}
try
{
var obj2 = dictWithMutableKey[new GoodButMutableTestRefKey(3)];
}
catch (KeyNotFoundException)
{
this.EqualityComparisonForKeysFailed.Content = "Bucket is correct now, but the referenced Entry has a key that is different from \"3\"";
}
try
{
var obj3 = dictWithMutableKey[new GoodButMutableTestRefKey(1)];
}
catch (KeyNotFoundException)
{
this.LookupByTheWrongBucket2.Content = "(GetHashCode() % buckets.Length) returns \"targetBucket\" 1 instead of 0 again";
}
var extractor = new DictionaryMetadataExtractor <GoodButMutableTestRefKey, string>();
metadata = extractor.ExtractMetadata(dictWithMutableKey);
this.DrawVisualization(metadata);
}
