src/base/features/input.hpp

#pragma once

#include"base/dependencies/index.hpp"

#include"shortcuts.hpp"

// Read the given arguments in order from the given input stream.
template<class...Types>
istream&read(istream&is,Types&...args){return(is>>...>>args);}

// Pair input overload.
template<class Fst,class Snd>
istream&operator>>(istream&is,pair<Fst,Snd>&p){return is>>p.first>>p.second;}

// Tuple input overload.
template<class...Types>istream&operator>>(istream&is,tuple<Types...>&t){
    apply([&is](Types&...args){read(is,args...);},t);
    return is;
}

// Array input overload.
template<class Type,size_t Size>
istream&operator>>(istream&is,array<Type,Size>&a){
    FORIT(it,a){is>>*it;}
    return is;
}

// Valarray input overload.
template<class Type>istream&operator>>(istream&is,valarray<Type>&va){
    FORIT(it,va){is>>*it;}
    return is;
}

// Vector input overload.
template<class Type>istream&operator>>(istream&is,vector<Type>&v){
    FORIT(it,v){
        Type e;
        is>>e,*it=move(e);
    }
    return is;
}