english.hh

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#pragma once
 
#include <iostream>
#include <algorithm>
#include <iterator>
#include <ranges>
#include <sstream>
 
namespace nix {

std::ostream & pluralize(
    std::ostream & output,
    unsigned int count,
    const std::string_view single,
    const std::string_view plural);
 

template<typename F, std::ranges::input_range R>
std::string concatStringsCommaAnd(F transform, const R & args)
{
    std::stringstream result;
    if (args.size() != 0) {
        result << transform(*args.begin());
    }
    if (args.size() >= 2) {
        // will not do anything for size <= 2
        std::for_each(std::next(args.begin()), std::prev(args.end()), [&](auto const & arg) {
            result << ", " << transform(arg);
        });
        result << " and " << transform(*args.rbegin());
    }
    return result.str();
};
 
}