On 4 May 2017 at 20:48, Michael Jones <michael.jo...@gmail.com> wrote: > What is *actually* missing is boolean operators for boolean types.
Really? We've got !, &&, ||, != (xor), == (xnor). What's missing? > On Thu, May 4, 2017 at 12:43 PM, Ian Lance Taylor <i...@golang.org> wrote: >> >> On Thu, May 4, 2017 at 9:42 AM, <occi...@esperanto.org> wrote: >> > >> > One apparently random omission in C, which was fixed in Perl, is &&= and >> > ||=: >> > >> > a &&= b >> > a = a && b >> > a ||= b >> > a = a || b >> > >> > except that a gets evalutated only once (e.g. myarray[f(2)] &&= b) >> > >> > Besides being useful, this would make Go more consistent. Of course >> > relative operators also do not have this, but there usually the result >> > type >> > is different (e.g. bool = int < int) >> >> The &&= and ||= operators are omitted in both C and Go because they >> are short-cutting operators. When you write `a = a && b`, then if a >> is true, b is not evaluated. So presumably when you write `a &&= b` >> then if a is true b is not evaluated. But it is potentially confusing >> to see `a &&= f()` when f() may or may not be called. >> >> Ian >> >> -- >> 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. > > > > > -- > Michael T. Jones > michael.jo...@gmail.com > > -- > 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. -- 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.
