Cannot use .begin() or .end() on an array

Question

The error reads:

request for member \'begin\', \'end\' in \'arr\' which is non class type int[5], unable to deduce from expression error.

Answer 1

Perhaps here is a cleaner way to do it using templates and lambdas in c++14:

Define:

template
void my_assign_to_each(Iterator start, Iterator stop, Funct f) {
    while (start != stop) {
        *start = f();
        ++start;
    }
}

template
void my_read_from_each(Iterator start, Iterator stop, Funct f) {
    while (start != stop) {
        f(*start);
        ++start;
    }
}

And then in main:

int x[10];
srand(time(0));
my_assign_to_each(x, x+10, [] () -> int { int rn{}; rn = rand(); return rn; });
my_read_from_each(x, x+10, [] (int value) { std::cout << value << std::endl; });

int common_value{18};
my_assign_to_each(x, x+10, [&common_value] () -> int { return common_value; });
my_read_from_each(x, x+10, [] (int value) { std::cout << value << std::endl; });