It’s allowed in case you wish to declare a function that returns an object of that class directly after the class’ declaration, for example : #include <iostream> inline class AAA { public: AAA() { // Nothing } AAA(const AAA& _Param) { std::cout << “Calling Copy Constructor of AAA\n”; } }A() { AAA a; return a; … Read more
Your analysis is correct, but doesn’t necessarily imply uselessness. Even if most compilers do automatically inline functions (reason #1), it’s best to declare inline just to describe intent. Disregarding interaction with inline, static functions should be used sparingly. The static modifier at namespace scope was formerly deprecated in favor of unnamed namespaces (C++03 §D.2). For … Read more
To elaborate a bit on collection initialization in F#, here are a few examples: read-only dictionary dict [ (1, “a”); (2, “b”); (3, “c”) ] seq (IEnumerable<T>) seq { 0 .. 99 } list [1; 2; 3; 4; 5] set set [1; 2; 3; 4; 5] array [| 1; 2; 3; 4; 5 |]
Aside from the fact that there’s no call (and therefore no associated expenses, like parameter preparation before the call and cleanup after the call), there’s another significant advantage of inlining. When the function body is inlined, it’s body can be re-interpreted in the specific context of the caller. This might immediately allow the compiler to … Read more
The C++ ISO standard says: A function defined within a class definition is an inline function. But, this doesn’t mean the function will necessarily be inlined: generally nowadays, it appears that the compiler will decide if inlining the function will lead to any benefits.
Asserting that something can be computed at compile-time is a pretty strong kind of optimization. Inlining merely removes a function call, by copy/pasting the function body into the call site. The function body still has to be executed, you just save the overhead of a function call. But if you make the same code be … Read more
General answer To ignore a single line, you can add a comment above the line: // ignore: non_constant_identifier_names final NEW = ‘NEW’; To ignore for the whole file, you can add a comment at the top of the file: // ignore_for_file: non_constant_identifier_names To ignore for the whole project, you can set the rule to false … Read more
No this can not be the case, because not every inovocation of constexpr function has to be able to be evaluated as subexpression of a core constant expression. We only need one argument value that allows for this. So a constexpr function can contain a throw statement as long as we have a argument value … Read more
@PublishedApi internal is the intended way of exposing non-public API for use in public inline functions. That @PublishedApi internal member becomes effectively public and its name doesn’t get mangled (if you noticed the opposite, please file a bug). @Suppress(“NON_PUBLIC_CALL_FROM_PUBLIC_INLINE”) is a band-aid workaround in the lack of @PublishedApi based on suppressing an error and therefore … Read more
There are three differences between using INLINABLE and not using a pragma at all: Without INLINABLE, the definition that goes in the interface file is the code after optimisation, whereas with INLINABLE, it is the code you wrote (more or less). In particular, without INLINABLE, GHC might inline other functions into the function’s definition. Without … Read more