var i uint64 var j int64 … j = int64(i) This performs the same conversion that C would do automatically when assigning i to j, but Go requires you to be a little more explicit.
> On Jul 29, 2017, at 6:54 PM, Tong Sun <suntong...@gmail.com> wrote: > > Neither PostgreSQL[1] nor SQLite[2] support unsigned 64-bit integers at the > SQL level. > However, I do need to save those unsigned 64-bit integers as-is into > database, as they are not numbers but hash values. > > What's the proper way to cast my uint64 as database signed integer and back > safely in Go? > > Let's use 8-bit variable as example, in C, I just assign the unsigned 8-bit > variable to a signed 8-bit variable, so 255 will "looks like" -1 when in > latter form. However, no info is lost, and when I assign it back from signed > 8-bit variable, I'm still getting 255. How to do the same thing in Go? > > Thanks > > [1] > https://stackoverflow.com/questions/21909027/postgres-data-types-how-to-store-uint64-in-postresql > [2] https://sqlite.org/datatype3.html > > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com > <mailto:golang-nuts+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
