3 ms·

How can you have a POD struct without pointers if one of your fields is a string?

• logicchains 12y ago
  Couldn't it be done with a fixed-size array of runes or bytes? It's definitely possible in C/C++.
  • z92 12y ago
    Not without wasting a lot of space depending on the difference between average size of string vs maximum size of string.
    • a8da6b0c91d 12y ago
      You can use a string class like the one in Folly that decays from a fixed array to heap allocated space if the string gets too long.
    • logicchains 12y ago
      We generally know the maximum string sizes for each property, and they're pretty small, so this wouldn't have been a problem.
  • masklinn 12y ago
    I believe it's also possible to use variable-size arrays in C or C++ (and end up with a variable-size struct). Go does allow fixed size arrays in structs, and they're inline in the struct, so `struct { foo [8]uint }` is 32 bytes, whereas `struct { foo []uint }` is 12 bytes and `struct { foo string }` is 8.