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“If consteval” is useful in the context of calling a consteval function from within a constexpr function. A consteval function can only be invoked in a constant expression and hence is evaluated at compile-time. On the other hand, a constexpr function may be invoked in a constant expression or non-constant expression. If invoked in a […]
The zip() function in Python is a convenient mechanism for iterating over multiple “iterables” in parallel. Looping over lists is a common scenario. Here is the output generated by the above code: Common Lisp does not have such a feature built into the language or as part of the standard library. Of course, we have […]
The type trait “std::is_scoped_enum<T>::value” was introduced in C++23 to check whether the type “T” is a scoped enum type. Another way to use this is std::is_scoped_enum_v<T>. Before getting into this trait in detail, let us briefly recap the differences between unscoped and scoped enums. Unscoped Enums Unscoped enums are the old-style enums. Look at the […]
In addition to the conventional “==” operator that checks if two objects are equal, Julia has the “===” operator to check for equality. What is the difference between these two operators? The “==” operator checks whether two objects have the same value. Here are some examples: Cell 5 shows that the RHS float value is […]
A Sum data type in V language gives us a convenient way to hold objects of many distinct types (at any time, just one object) and hence is a discriminated union. For example, in C++ we have the variant type. Here is an example of sum type in V language: In the above program, the […]
The ability to enumerate stack frames at runtime is one of the interesting features introduced in C++23. This is made possible through the <stacktrace> header. The interface is quite simple. Here is a piece of code showing how to use the library. There are 4 functions and here is the call chain: The “dumpStackTrace()” function […]
I had written about std::optional<> in an earlier article. C++23 introduces std::expected<> as an interesting extension to std::optional<>. Whereas std::optional<> contains a value or none at all, std::expected<> contains a value or an error code associated with it. This gives better control to the caller in terms of handling the outcome of the function call. […]
The defer statement in Vlang causes code to be executed when the enclosing function returns. This feature is inspired by Golang, but is slightly more flexible since it allows any block of code to be associated with defer instead of just a function call. defer is used primarily to handle “clean up” logic, such as […]
The relatively new V Programming Language (Vlang) boasts of some interesting features such as “fast compilation” and runtime performance “as fast as C”, at the same time being a “simple language”. As I normally do with other languages that I learn and use, I decided to see how easy it is to build a shared […]
A few weeks ago I registered with OpenAI to access its services through API and created a secret Key for my use. I then decided to build a simple application to try out the “Chat” and “Completion” models. Since I have several tools at my disposal (RAD Studio, LispWorks, Allegro CommonLisp, Visual Studio, and Xojo), […]
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