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The type trait is_convertible<From, To> checks if an object of type From can be “implicitly” converted to an object of type To. The expression is_convertible<From, To>::value returns true if implicit conversion is possible, else it returns false. For more details, please check out the reference. Let us look at three primary cases. Case-1: Pre-defined Types […]
In the last article, we looked at the std:is_base_of<T1, T2> type trait. One question that a reader asked since that article appeared is “How does is_base_of<> differ from the dynamic_cast<> operator?” Good question! In today’s post let me try to address the key differences between the two. I am not going to cover the dynamic_cast<> […]
In our on-going series on C++ Type Traits, today’s topic is about the trait std::is_base_of<>. For the official description, see this. std::is_base_of<A, B>::value takes two arguments, both classes (or structs), and returns true if A is a base class of B and false otherwise. Trivially, std::<A, A>::value is true. Let us look at an example […]
In today’s post, I would like to go over the type trait std::common_type<>. This trait was introduced in C++11. As per the specification, std::common_type<T1, T2, …Tn>::type refers to a type Tx in the given list, which the rest of the types in the list can be implicitly converted to. This works with built-in as well […]
In the previous post, we looked at the std::is_destructible<T> type trait. Today, let us try to understand another type trait std::is_empty<T>. As per the specification, is_empty<T>::value will return true in the following cases: – The class/struct has no non-static data member – The class/struct does not define a virtual function – The class/struct does not […]
In the last article, I explained the deleted destructor in some detail. Today, I would like to talk about a related construct, a type trait called std::is_destructible. Type traits, defined in the header <type_traits>, are a big help when it comes to implementing template metaprogramming. See this article for a nice introduction to type traits in […]
Since C++ 11, we can use the keyword delete to declare functions as deleted and thus prohibit the use of these functions in the code. See this article for a brief overview. In particular, the destructor of a class/struct/union can be declared as deleted. In today’s article, I am going to discuss this specific feature in […]
The iLexicon system can handle active/passive voice conversion of fairly complex English sentences. I gave examples of the underlying verb conjugation mechanism in this article and this one. Today, I am going to give examples of the conversion of complete sentences. Here is an example of active to passive voice conversion: The above is a snapshot […]
In my earlier article, I showed how the iLexicon system can generate verb conjugations based on <Verb, Tense, Person, Number> quadruple. For the 16 tense forms discussed in that article, the verb conjugations were generated in “active” voice. We all know that “transitive” verbs can be expressed in both “active” and “passive” voice. For example, […]
After my last book review, I decided to check out a few websites that claim to simplify English text and/or help compute the measure of readability. In today’s post, I am sharing the results of my experiment. www.simplish.org This site has some interesting functionality. It does spelling check, grammar check, text simplification, and can even […]
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