Store single string value from node view array into string variable

[HealthyPear]

Is your feature request related to a problem? Please describe.

I have something like this,

[geometry]
size = ["3 m", "1 m", "1 m"]

This issue is likely related to the discussion in #45 and it's for sure related to my poor understanding of C++ :)

Describe the solution you'd like

I tried to play a bit like this (nevermind the type prints, I was trying to navigate the API docs),

#include <iostream>
#include <string>
#include <typeinfo>
#include <toml++/toml.h>
using namespace std::string_view_literals;

int main()
{
    toml::table tbl = toml::parse(R"(
        [world]
        size = ["3 m", "1 m", "1 m"]
    )"sv);

    auto world = tbl["world"];

    std::cout << typeid(world).name() << std::endl;

    auto size = world["size"];

    std::cout << typeid(size).name() << std::endl;

    if (size.is_homogeneous<std::string>()){

        std::cout << "world[size] is a homogeneous array of strings!" << std::endl;

        std::cout << tbl["world"]["size"][1] << std::endl;

        std::cout << typeid(tbl["world"]["size"][1]).name() << std::endl;

        std::string size_along_y = *tbl["world"]["size"][1].as_string();
    }

    return 0;
}

Is this not possible or am I (very likely) missing something?

Additional context

[marzer]

value_or() should do the trick:

toml::table tbl = toml::parse(R"(
      [world]
      size = ["3 m", "1 m", "1 m"]
)"sv);

std::vector<std::string> size{
    tbl["world"][0].value_or("0 m"),
    tbl["world"][1].value_or("0 m"),
    tbl["world"][2].value_or("0 m")
};

[HealthyPear]

this works but you need to add ["size"] between ["world"] and the index

maybe this small example is worth adding to the docs, not sure if I have overlooked it

[marzer]

There is an example of value_or() in the docs already. It's on the main page, under "Working with TOML data".

Anyways, glad it works for you.

[HealthyPear]

There is an example of value_or() in the docs already. It's on the main page, under "Working with TOML data".

I saw that but it refers to a simple string, not to an array which was for me less straightforward (but again, it might be that I am the problem since I never really worked with C++)