Type conversion to vector in C++

Question

How to convert a RepeatedField<google::protobuf::uint32> to a const std::vector<double>?

Removing each element from RepeatedField and putting it in the vector should work. — Galik, Nov 28 '14 at 13:55
@BenjaminBannier: All (u)int32 values can be stored precisely in a double. http://stackoverflow.com/a/1848762/25488 — RobH, Nov 28 '14 at 14:09

Kerrek SB · Accepted Answer · 2014-11-28T14:16:26.030

15

That should be easy, since repeated fields act as containers:

void foo(RepeatedField<google::protobuf::uint32> const & f)
{
    std::vector<double> v(f.begin(), f.end());

    // use v
}

edited Nov 28 '14 at 14:16

answered Nov 28 '14 at 13:56

Kerrek SB

1

@KarolyHorvath The solution is WLOG. – Columbo Nov 28 '14 at 14:14
I am getting this error "expression vector iterator + offset out of range" – Dosti Nov 28 '14 at 14:15
Yes... it is executing fine, but at one point it is throwing this error. – Dosti Nov 28 '14 at 14:20
@Dosti: Then you have a mistake elsewhere, not fundamentally connected with the iterator interface of `RepeatedField`. – Kerrek SB Nov 28 '14 at 14:24

1 Answers1