Have you looked at the Format foreign? 8!:n It won't tell you the leading 0's but it might solve your problem in another way?
Cheers, bob > On Sep 15, 2023, at 12:30, Piet de Jong <pietd...@gmail.com> wrote: > > I was hoping for a verb u that would tell me generally how many zeroes are at > the front of eg 0001001 so that I could distinguish it from 1001. > > Thinking about things I want u such that (u y) returns both the y and the > number of zeroes fronting y. > > > >> On 16 Sep 2023, at 04:50, 'robert therriault' via Programming >> <programm...@jsoftware.com> wrote: >> >> Is this what you are looking for, Piet? >> >> Cheers, bob >> >> datatype 01 >> integer >> datatype 1 >> boolean >> datatype >> 3 : 0 >> n=. 1 2 4 8 16 32 64 128 1024 2048 4096 8192 16384 32768 65536 131072 262144 >> t=. '/boolean/literal/integer/floating/complex/boxed/extended/rational' >> t=. t,'/sparse boolean/sparse literal/sparse integer/sparse floating' >> t=. t,'/sparse complex/sparse boxed/symbol/unicode/unicode4' >> (n i. 3!:0 y) pick <;._1 t >> ) >> >> >>> On Sep 15, 2023, at 11:45, Piet de Jong <pietd...@gmail.com> wrote: >>> >>> Would like a verb u such that (u 1) does not match (u 01) >>> Without resorting to character input. >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
