AFAIK ObjectiveC (just like C and C++) do not provide you with a syntax that allows what you directly have in mind. The usual workaround is to create two versions of a function. One that may be called directly using … and another one called by others functions passing the parameters in form of a … Read more
Yes, float arguments to variadic function are promoted to double. The draft C99 standard section 6.5.2.2 Function calls says: […]and arguments that have type float are promoted to double. These are called the default argument promotions.[…] from the draft C++ standard section 5.2.2 Function call: […]a floating point type that is subject to the floating … Read more
These are called Variadic functions. Wikipedia lists example code for C++. To portably implement variadic functions in the C programming language, the standard stdarg.h header file should be used. The older varargs.h header has been deprecated in favor of stdarg.h. In C++, the header file cstdarg should be used. To create a variadic function, an … Read more
According to § 8.3.5.4 of the C++ standard (current draft): Where syntactically correct and where “…” is not part of an abstract-declarator, “, …” is synonymous with “…”. In short, in C++ … (ellipsis) is an operator in its own right and so can be used without the comma, but use of the comma is … Read more
There’s no such thing as a List<int> in Java – generics don’t support primitives. Autoboxing only happens for a single element, not for arrays of primitives. As for how to correct it – there are various libraries with oodles of methods for doing things like this. There’s no way round this, and I don’t think … Read more
In general, you can’t – Rust does not support variadic functions, except when interoperating with C code that uses varargs. In this case, since all of your arguments are the same type, you can accept a slice: fn foo(args: &[&str]) { for arg in args { println!(“{}”, arg); } } fn main() { foo(&[“hello”, “world”, … Read more
The reason is simple: a variable arity parameter is simply an old-school array paramater with some additional metadata that tells the compiler to provide some syntactic sugar (namely, it allows implicit array creation). So from the perspective of the JVM Object… is pretty much the same as Object[]. Allowing collections as well would require a … Read more
From the JEP docs itself – Description – These will include varargs overloads, so that there is no fixed limit on the collection size. However, the collection instances so created may be tuned for smaller sizes. Special-case APIs (fixed-argument overloads) for up to ten of elements will be provided. While this introduces some clutter in … Read more