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What's the purpose of the Tuple(T1)/Singleton in .net?
Trying to mimic a Tuple as implemented in .Net 4 (For .Net 3) I just realized there is a Tuple(Of T)? This was quite a surprize!
Why would anyone do this
Tuple<string> result = new Tuple<string>("Data");
Instead of this
return "Data";
Isn't the whole point of a tuple that its a container for "loosely related data that isnt cohesive enough to make another class"? Am I missing something?
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Tuple is a collection which is ordered and unchangeable. Allows duplicate members. Use normal brackets () for tuples. Set is a collection which is unordered and unindexed. No duplicate members.
Tuples are used to store multiple items in a single variable. Tuple is one of 4 built-in data types in Python used to store collections of data, the other 3 are List, Set, and Dictionary, all with different qualities and usage. A tuple is a collection which is ordered and unchangeable.
Tuples A Tuple represents a collection of objects that are ordered and immutable (cannot be modified). Tuples allow duplicate members and are indexed.
Method #1 : Using set() + tuple() This is the most straight forward way to remove duplicates. In this, we convert the tuple to a set, removing duplicates and then converting it back again using tuple().
There are a finite number of tuple-arities in the library, so to define an 8-tuple, you use the kind with 7-elements whose 'rest' argument is a one-tuple. See
http://msdn.microsoft.com/en-us/library/dd383325.aspx
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This is a carry over from set theory that might not have much use for a software developer.
Tuples are simply ordered lists of elements. An N-tuple has n elements, and n can be one, which is called a singleton. You probably won't have much use for a 1-tuple in code, but I'm guessing the C# team put it in there for completeness.
http://en.wikipedia.org/wiki/Tuple#Etymology
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