Re: How to dynamically create a structure

"Jim Langston" <>
Fri, 6 Apr 2007 03:43:05 -0700
"AlabiChin" <> wrote in message


I'm trying to find out if it is possible to dynamically add or remove
fields for a structure. I'm in a situation where I don't know how many
items I want to store and, therefore, will not know the size of the
structure at compile time and would like to handle it at runtime
(after having gathered necessary data).

If this is not possible to do this using standard C++, do you know if
it is in a Win32 API environment?

Thanks for any assistance with this?

I've run into that issue when dealing with interfacing with databases.
Basically I had to build my own structure class, so to speak, for my
records. In my scenario, all the data is stored in std::strings because,
well, that's the way they're stored in the MySQL database, but I could of
also stored ints into std::strings by copying the bytes back and forth.

I think it really depends on just what it is you are trying to do.

What you are looking for are generally called Fields, and C++ does not have
them built in. You either have to roll them your own or get some code from
someone who's already done it similar to how you need it.

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