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Home/ Questions/Q 6074217
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Editorial Team
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Editorial Team
Asked: May 23, 20262026-05-23T10:21:27+00:00 2026-05-23T10:21:27+00:00

I am using boost::tuple for my code. Suppose that I want to store an

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I am using boost::tuple for my code.

Suppose that I want to store an equivalent of a structure having 3 members

  typedef boost::tuple< std::string, int, double > my_struct;

Is there any way of method to call on the tuple that will give me the number of members contained so in this case 3?

My goal here is to monitor when I increase the number of template parameters.

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  1. Editorial Team
    Editorial Team
    2026-05-23T10:21:27+00:00Added an answer on May 23, 2026 at 10:21 am

    Use the ::boost::tuples::length<T>::value helper function.

    See documentation.

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