Question

C++ STL string is implemented by template.

I am learing C# at the moment, just curious what’s the reason the .net designers didn’t provide a generic string in System.Collections.Generic?

How can I have a int’s string, double’s string in C#?

Answer 1

There are no such things as strings of ints or doubles in C#^*; the closest thing is a List<T>, but it does not support the typical string-specific operations, such as substrings, trimming, and so on.

You can do most of the things that you can with a string using .NET’s LINQ. For example, substring(1,5) would be list.Skip(1).Take(5).ToList().

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^* The same is true for C++: there is basic_string template that can be instantiated with other types, but std::string is an instance of a template class, not a template class itself.