auto triples = view::for_each(view::ints(1), [](int z) {
        return view::for_each(view::ints(1, z + 1), [=](int x) {
            return view::for_each(view::ints(x, z + 1), [=](int y) {
                return yield_if(x * x + y * y == z * z,
                    std::make_tuple(x, y, z));
            });
        });
    });

class MainPic extends Component {
  constructor(){
    super();
    this.state = {
      mainPicPath : '',
      imageId: null,
    }
}

fetchData() {
  fetch( this.props.DATA_URI + "/getimage?selected_image=" + this.props.selectedImage)
    .then(response => response.json())
    .then(data =>  {
      this.setState( { 
        mainPicPath : data.imagePath,
        imageId : data.image_id,
       })
     })
     .catch(error => {
        console.log("error: ", error);
     })
}


componentDidMount() {
    this.fetchData();
}

render() {
  return(
    <div>
    <img src={ this.props.DATA_URI + this.state.mainPicPath } alt='whatisthis' /> 
    <Answers imageId={this.state.imageId} />
    </div>
   );
  }
}