elgris
commented
6 years ago Hi @fuintis ! Thanks for asking!
Well, it won't be a complete deep copy. For instance, sqrl.Select("*").From("users") returns you an instance of SelectBuilder which contains a bunch of slices. Slice is a pointer type, so if you try to copy it, you'll copy a pointer to the same memory block.
That means, that in your example sqlSelect and query refer to the same memory blocks. It can be dangerous. Imagine that sqlSelect internally changes its whereParts. That change will affect query as well. And you probably don't want such a surprise in your system :)
Hello to everyone:
I know that sqrl is not thread safe, but: In a webservice context, What if on every request a cached pointer to an SelectBuilder is dereferenced and assigned to a variable?
Something like this:
var sqlSelect sqrl.Select("").From("users") // sqr.SelectBuilder . . . func calledOnEveryRequest() (error) { query := *sqlSelect // Is "query" a completely new copy (deep copy) of sqlSelect value? . . . }
Many thanks in advance.