Difference between revisions of "OOP Class12"
esse quam videri
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==Interfaces Part2== | ==Interfaces Part2== | ||
+ | |||
+ | There are many interfaces in the .net framework. Some that we have been working with are the [ICollection https://msdn.microsoft.com/en-us/library/system.collections.icollection(v=vs.110).aspx] [IList https://msdn.microsoft.com/en-us/library/system.collections.ilist(v=vs.110).aspx] and [IEnumerable https://msdn.microsoft.com/en-us/library/system.collections.ienumerable(v=vs.110).aspx] | ||
+ | |||
+ | These interfaces allow us to use methods in a List and Array. | ||
+ | |||
+ | Here is an example of sorting a list of ints or an int[] | ||
+ | <csharp> | ||
+ | int[] ints = new int[] { 5, 4, 2, 3, 1 }; | ||
+ | foreach (var number in ints) | ||
+ | { | ||
+ | Console.Write(string.Format("{0}\t", number)); | ||
+ | } | ||
+ | Console.WriteLine(); | ||
+ | |||
+ | Array.Sort(ints); | ||
+ | foreach (var number in ints) | ||
+ | { | ||
+ | Console.Write(string.Format("{0}\t", number)); | ||
+ | } | ||
+ | Console.WriteLine(); | ||
+ | |||
+ | ints = ints.Reverse().ToArray(); | ||
+ | foreach (var number in ints) | ||
+ | { | ||
+ | Console.Write(string.Format("{0}\t", number)); | ||
+ | } | ||
+ | Console.WriteLine(); | ||
+ | |||
+ | //mess it up again | ||
+ | ints = new int[] { 5, 4, 2, 3, 1 }; | ||
+ | |||
+ | ints = ints.OrderBy(i => i).ToArray(); | ||
+ | foreach (var number in ints) | ||
+ | { | ||
+ | Console.Write(string.Format("{0}\t", number)); | ||
+ | } | ||
+ | Console.WriteLine(); | ||
+ | |||
+ | //mess it up again | ||
+ | ints = new int[] { 5, 4, 2, 3, 1 }; | ||
+ | |||
+ | //last way slightly uses agregate function to Order array by int, turns array into list so we can call foreach | ||
+ | ints.OrderBy(i => i).ToList().ForEach(ii=>Console.Write(string.Format("{0}\t", ii))); | ||
+ | Console.WriteLine(); | ||
+ | </csharp> | ||
+ | |||
+ | now with List | ||
+ | <csharp> | ||
+ | </csharp> | ||
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Revision as of 03:17, 24 November 2015
Interfaces Part2
There are many interfaces in the .net framework. Some that we have been working with are the [ICollection https://msdn.microsoft.com/en-us/library/system.collections.icollection(v=vs.110).aspx] [IList https://msdn.microsoft.com/en-us/library/system.collections.ilist(v=vs.110).aspx] and [IEnumerable https://msdn.microsoft.com/en-us/library/system.collections.ienumerable(v=vs.110).aspx]
These interfaces allow us to use methods in a List and Array.
Here is an example of sorting a list of ints or an int[] <csharp> int[] ints = new int[] { 5, 4, 2, 3, 1 };
foreach (var number in ints) { Console.Write(string.Format("{0}\t", number)); } Console.WriteLine();
Array.Sort(ints); foreach (var number in ints) { Console.Write(string.Format("{0}\t", number)); } Console.WriteLine(); ints = ints.Reverse().ToArray(); foreach (var number in ints) { Console.Write(string.Format("{0}\t", number)); } Console.WriteLine();
//mess it up again ints = new int[] { 5, 4, 2, 3, 1 };
ints = ints.OrderBy(i => i).ToArray(); foreach (var number in ints) { Console.Write(string.Format("{0}\t", number)); } Console.WriteLine();
//mess it up again ints = new int[] { 5, 4, 2, 3, 1 };
//last way slightly uses agregate function to Order array by int, turns array into list so we can call foreach ints.OrderBy(i => i).ToList().ForEach(ii=>Console.Write(string.Format("{0}\t", ii))); Console.WriteLine();
</csharp>
now with List <csharp> </csharp>