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Although the em(construction) of template classes will only be constructed in
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chapter ref(TEMPCLASS), template classes have already extensively been
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Although the em(construction) of class templates is the topic of
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chapter ref(TEMPCLASS), class templates have already extensively been
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em(used) earlier. For example, abstract containers (covered in chapter
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ref(Containers)) are actually defined as template classes. Like
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concrete classes (i.e., non-template classes), template classes can
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participate in the construction of
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ref(Containers)) are actually defined as class templates. Class templates
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ordinary classes, participate in the construction of
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i(class hierarchies).
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In section ref(DERIVEDTEMPCLASS) it is shown how a i(template class) can
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be derived from another template class.
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In section ref(DERIVEDTEMPCLASS) it is shown how a i(class template) can
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be derived from another class template.
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As template class derivation remains to be covered, the following
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As class template derivation remains to be covered, the following
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discussion is necessarily somewhat abstract. Optionally, the reader may of
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course skip briefly to section ref(DERIVEDTEMPCLASS), to read this
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course skip briefly to section ref(DERIVEDTEMPCLASS), and return back to this
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section thereafter.
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In this section it should now be assumed, for the sake of argument, that a
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template class tt(Vector) has somehow been derived from a tt(std::vector).
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Furthermore, assume that the following template function has been
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In this section it should be assumed, for the sake of argument, that a
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class template tt(Vector) has somehow been derived from a tt(std::vector).
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Furthermore, assume that the following function template has been
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constructed to sort a vector using some function object tt(obj):
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template <typename Type, typename Object>
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Applying the transformation
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hi(transformation to a base class)
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hi(template class: transformation to a base class)
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hi(class template: transformation to a base class)
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em(transformation to a base class instantiated from a class template), the
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template function tt(sortVectors()) may now also be used to sort tt(Vector)
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function template tt(sortVectors()) may now also be used to sort tt(Vector)
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objects. For example:
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Vector<string> vs; // note: not `std::vector'
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Vector<string> vs; // `Vector' instead of `std::vector'
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sortVector(vs, CaseLess());
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yo/templatefunctions/baseclass.yo
