“Permanent” std::setw

by

Well, it’s not possible. No way to make it call .width each time again. But you can use boost, of course:

#include <boost/function_output_iterator.hpp>
#include <boost/lambda/lambda.hpp>
#include <algorithm>
#include <iostream>
#include <iomanip>

int main() {
    using namespace boost::lambda;
    int a[] = { 1, 2, 3, 4 };
    std::copy(a, a + 4, 
        boost::make_function_output_iterator( 
              var(std::cout) << std::setw(3) << _1)
        );
}

It does create its own functor, but it happens behind the scene 🙂

More Related Contents:

  1. Difference of keywords ‘typename’ and ‘class’ in templates?
  2. C++ templates that accept only certain types
  3. Function passed as template argument
  4. How to easily map c++ enums to strings
  5. How to declare a templated struct/class as a friend?
  6. templates: parent class member variables not visible in inherited class
  7. How to initialize std::array elegantly if T is not default constructible?
  8. Template issue causes linker error (C++) [duplicate]
  9. Template tuple – calling a function on each element
  10. Workaround for template argument deduction in non-deduced context
  11. Are C++ Templates just Macros in disguise?
  12. Restrict C++ Template Parameter to Subclass
  13. How do I force a particular instance of a C++ template to instantiate?
  14. accessing protected members of superclass in C++ with templates [duplicate]
  15. Variadic templates
  16. Array decay to pointers in templates
  17. What is the easiest way to print a variadic parameter pack using std::ostream?
  18. Why is allocator::rebind necessary when we have template template parameters?
  19. static member initialization for specialized template class
  20. Determine if Type is a pointer in a template function
  21. c++ template parameter type inference
  22. C++11 is_same type trait for templates
  23. gcc can compile a variadic template while clang cannot
  24. using SFINAE for template class specialisation
  25. calculating factorial using template meta-programming
  26. Templates: template function not playing well with class’s template member function [duplicate]
  27. Dependent scope and nested templates
  28. Can I use the result of a C++17 captureless lambda constexpr conversion operator as a function pointer template non-type argument?
  29. Check if a type is passed in variadic template parameter pack
  30. Concatenate compile-time strings in a template at compile time?

Leave a Comment