Templates encourage generic programming. When classes or functions only differ by type, there is no need to write the same implementations over and over -- the compiler generates the functions or classes from the template. You can also cater for specialisation, so if you need a more specific implementation for pointers to types rather than actual types, you can provide the code to cater for this, without the need to duplicate already existing code that caters for all types.
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You will create a template function whenever you have a function implementation that can be overloaded to cater for more than one type. Rather than re-write the same implementations over and over to cater for each type you might use now or in the future, you template the type and write one version of the function. The compiler will then generate all the necessary overloads for you on an as-required basis. This helps reduce maintenance when you need to alter the implementation because the code is all in one place, so there is no need to duplicate your changes by hand, which is both time-consuming and prone to error. Template functions are intended as an alternative to macro functions. While macros do have their uses, particularly in debug code, they are not type safe and cannot be debugged. Moreover, macros are always inline expanded whereas template functions are only inline expanded when the compiler's optimisers determine that there is an advantage in doing so.
C++ does not have built-in support for delegates, however it is possible to simulate delegation through the use of template hacks. See related links below for more information.
If you mean the original name of C++, it was originally called "C with Classes". However, after the introduction of template metaprogramming, it was renamed C++ which meant "the successor to C".
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Mark Nelson has written: 'C++ programmer's guide to the standard template library' -- subject(s): C++ (Computer program language), Standard template library, C. 'C [plus plus] programmer's guide to the Standard Template Library' -- subject(s): C.
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You will create a template function whenever you have a function implementation that can be overloaded to cater for more than one type. Rather than re-write the same implementations over and over to cater for each type you might use now or in the future, you template the type and write one version of the function. The compiler will then generate all the necessary overloads for you on an as-required basis. This helps reduce maintenance when you need to alter the implementation because the code is all in one place, so there is no need to duplicate your changes by hand, which is both time-consuming and prone to error. Template functions are intended as an alternative to macro functions. While macros do have their uses, particularly in debug code, they are not type safe and cannot be debugged. Moreover, macros are always inline expanded whereas template functions are only inline expanded when the compiler's optimisers determine that there is an advantage in doing so.
Use the following template function: template<class T> T& max(T& x, T& y){return(y<x?x:y;}
The Standard Template Library does not provide routines or packages for I/O. You are probably thinking iostreams library, using cin and cout, which is part of the RunTime Library, but not part of the STL.
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Standard Template Library. The STL basically provides templates for common containers, such as lists and queues, as well as functions, iterators and algorithms.
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Sometimes, it is. Some implementations compile C++ code into C code, and then compile the C code.
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