See here: https://play.golang.org/p/EjdQRUnwQF
The weird thing is that time.Now().UnixNano() doesn't appear to ever change in the playground... On Mon, May 8, 2017 at 10:21 AM, Decker, Ryan C. <rdec...@siena.edu> wrote: > I usually follow the example and go with time.Now().UnixNano() which you > can see here: > > > On Mon, May 8, 2017 at 10:07 AM, messju mohr <mes...@lammfellpuschen.de> > wrote: > >> Hi, >> >> in xrand() you are initialising r with the same constant seed for >> every call, so you always get the same pseudo random number. >> >> See: <https://play.golang.org/p/XwNmYv5nzJ> >> >> cheers >> messju >> >> >> On Mon, May 08, 2017 at 03:26:08AM -0700, sivarajshabin...@gmail.com >> wrote: >> > Hi All, >> > >> > Firstly, sorry for the title that sounds like a click bait. I am not >> > understanding what exactly is wrong with this program >> > [1]https://play.golang.org/p/Tl0wpaCqK7 >> > >> > package main >> > >> > import ( >> > "fmt" >> > "math/rand" >> > "runtime" >> > ) >> > >> > func xrand() int { >> > r := rand.New(rand.NewSource(99)) >> > return r.Int() >> > } >> > >> > func main() { >> > fmt.Printf("Version %s\n", runtime.Version()) >> > fmt.Printf("looks buggy \t1: %d, 2: %d, 3: %d\n", xrand(), >> xrand(), >> > xrand()) >> > >> > r1 := rand.New(rand.NewSource(99)) >> > fmt.Printf("Looks fine \t1: %d, 2: %d, 3: %d\n", r1.Int(), >> > r1.Int(), r1.Int()) >> > } >> > Output>>>> >> > >> > Version go1.8 >> > looks buggy 1: 1108929909, 2: 1108929909, 3: 1108929909 >> > Looks find 1: 1108929909, 2: 1298032409, 3: 913431059 >> > >> > When I generate a random number with "math/rand", like the example >> given >> > in documentation [2]https://play.golang.org/p/O2k_za0AW7 except >> that I >> > return the randomly generated integer from a function, But the >> function >> > keeps returning the same value any number of time I call it. On the >> > contrary running the same code from the main generates random values, >> > there isn't a reason to doubt rand package. However in the second >> print >> > statement where random numbers are properly generated the first value >> > always is the same value returned by xrand(), here there is >> something to >> > doubt rand package. >> > >> > What am I missing here? Could it be a bug? >> > >> > Thanks in advance. >> > >> > Cheers >> > Shabinesh >> >> -- >> 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. >> > > > > -- > Ryan C. Decker '08 > Sr. Network & Systems Engineer > Siena College ITS > 515 Loudon Road > Loudonville, NY 12211 > rdec...@siena.edu > > CONFIDENTIALITY NOTICE: This e-mail, including any attachments, is for the > sole use of the intended recipient(s) and may contain confidential and > privileged information. Any unauthorized review, use, disclosure, or > distribution is prohibited. If you received this e-mail and are not the > intended recipient, please inform the sender by e-mail reply and destroy > all copies of the original message. > -- Ryan C. Decker '08 Sr. Network & Systems Engineer Siena College ITS 515 Loudon Road Loudonville, NY 12211 rdec...@siena.edu CONFIDENTIALITY NOTICE: This e-mail, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure, or distribution is prohibited. If you received this e-mail and are not the intended recipient, please inform the sender by e-mail reply and destroy all copies of the original message. -- 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.
