Questions tagged [variadic-functions]
A function is variadic if it can accept a variable number of arguments; that is, its arity is not fixed. The abbreviation "varargs" is commonly used to refer to these types of functions.
variadic-functions
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Type for heterogeneous *args
In typed Python, how do you type a *args list that you're expecting to pass to another argument that is a higher kinded function?
For example, this function takes a function and its first argument and ...
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expand parameter pack with boolean operation
I tried to do function that checks if the argument matches specific values.
I think know how to do it with recursion or std::initializer_list, but I want to do it with fold. Here is non working code:
...
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Using `std::apply` to iterate over `std::tuple` [duplicate]
I am trying to call a particular member function in all elements of a tuple using std::apply. This works when I use a lambda but not when defining a free function.
Following Template tuple - calling a ...
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va_arg - different behavior on Linux and Windows
I did some test code to demonstrate different output on Windows and Linux
#include <stdarg.h>
#include <stdio.h>
void print_vint(va_list args)
{
int i = va_arg(args, int);
printf(&...
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sizeof(va_list) = 24 not 8
By definition, in stdarg.h typedef char* va_list.so the size of va_list should be 8 not 24 in ubuntu 20.04 64bits gcc 9.4.0, i don't know why i get the size of va_list is 24?
I runed the following ...
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Convert `(String, Int)...` variadic parameter function to Dictionary for ExpressibleByDictionaryLiteral
I have objects that are currently initialized via one-parameter init functions that take an Array or Dictionary.
I've realized that I can use ExpressibleByArrayLiteral and ...
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Unable to propagate variable args from one variadic function to another [duplicate]
I have read the following about passing arguments to variadic functions,
https://stackoverflow.com/a/3530807/22299201
#include<stdio.h>
#include<string.h>
#include<stdarg.h>
#define ...
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How do I pass a type based on a variadic type in TypeScript?
TypeScript playground link
I'm creating a route handler creator for Express for a project, and I'm trying to make it so that you can pass arbitrary assertions as initial arguments before passing the ...
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Function that takes both variadic arguments and a class type?
In C++, is it possible to create a templated function which takes both a class type and a variable number of arguments? The function I'm imagining would work something like this (although this is ...
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va_args in c from <stdarg.h> does not work correctly
I am trying to write my own printf function in c, but I faced with a problem,
when I want to call my functions with this arguments :
ft_printf ("Characters: %c %c\n",'s','e');
instead of ...
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`rest*` vs `rest @ _*` when pattern matching in Scala
val List(a, b, c, rest*) = ...
val List(a, b, c, rest @ _*) = ...
Both seem to work, but I've had situations where the former raises the error "bad simple pattern". Only occasionally ...
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Can Cython be used to define C-callable variadic functions?
I'm writing a Python library for testing DLLs that implement a particular C API. This library also exposes functionality to the native DLLs through callback functions fetched at runtime. There's a ...
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Is this use of va_copy undefined behaviour?
I made a function that prints pairs of keys and values, where the keys are trusted compile time literal strings which possibly can contain printf specifiers. Now my question is: is this function legal ...
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Searching a way to use different variadic functors basing on condition
I have a runtime boolean verbose that if false excludes some prints to stdout.
To fix ideas, consider to have a lot of parts like:
void add(const int a, const int b, const bool verbose)
{
//...
...
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cascaded calls to variadic functions in C
I need to make a wrapper of vprintf, so that multiple implementations of a printf like function can be done. This code demonstrates the issue:
#include <stdio.h>
#include <stdlib.h>
#...
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