Oddly, that doesn't work on my machine. It looks plausible, though.
Thanks, -- Raul On Thu, Jun 21, 2018 at 3:09 AM Xiao-Yong Jin <[email protected]> wrote: > > You can also call c library functions. > > l=.({.~i.&LF)memr b,0,s[(c,' fgets *c *c i *')cd(<b=.mema > s);(s=.256);<f=.{.(c,' fdopen * i *c')cd(d=.0 cd~' dup > i > i',~c=.unxlib'c');1 1$'r' > hello read line > (;$)l > ┌───────────────┬──┐ > │hello read line│15│ > └───────────────┴──┘ > (c,' fclose i *')cd<f > > > > On Jun 19, 2018, at 8:13 PM, Raul Miller <[email protected]> wrote: > > > > Actually, thinking about this - 1!:1 reads the whole file, so it's > > stty won't make a difference .- you'd need to use control-D to > > terminate everything you send to it interactively. > > > > One approach - not incredibly efficient, but interactive > > line-at-a-time input isn't about efficiency, might be: > > > > LINE=: 2!:0'read line; echo "$line"' > > > > This relies on 2!:0 being handled by /bin/sh (and note that you'll get > > a trailing LF character when you do this). The double quotes are so > > that redundant whitespace isn't removed by the shell... > > > > Or, if you want that as a verb: > > > > readline=: 2!:0 bind 'read line; echo "$line"' > > > > I hope this helps. > > > > -- > > Raul > > On Tue, Jun 19, 2018 at 8:57 PM Raul Miller <[email protected]> wrote: > >> > >> Ah.. experimenting with this: > >> > >> stdin'' reads till end of file (hit control-D to finish input) > >> readln'' as defined in this thread returns immediately, reading an empty > >> string. > >> > >> At least on *my* system. > >> > >> I tried running > >> > >> stty eol ^J before starting J, thinking that would fix it, but it did > >> not. But I'm running OSX where it might be that there's some "new and > >> improved" mechanism for defining the end of line character. > >> > >> Anyways, this is likely an OS issue and the solution probably will > >> depend on your OS. > >> > >> I hope this helps, > >> > >> -- > >> Raul > >> > >> On Tue, Jun 19, 2018 at 8:41 PM Eric Iverson <[email protected]> > >> wrote: > >>> > >>> I think the replies here miss an important part of the question. The #! > >>> script. > >>> > >>> #! /usr/bin/j8 > >>> stdin'' > >>> > >>> On Tue, Jun 19, 2018 at 8:21 PM, Don Guinn <[email protected]> wrote: > >>> > >>>> It appears that the right argument is ignored. Perhaps have it be > >>>> displayed > >>>> on the same line as the input. > >>>> > >>>> readln 'Name: ' > >>>> > >>>> On Tue, Jun 19, 2018 at 6:18 PM Raul Miller <[email protected]> > >>>> wrote: > >>>> > >>>>> 1 -:&(3!:3) 01 > >>>>> 1 > >>>>> > >>>>> No difference in what's represented, so the only difference is in how > >>>>> you type it / the leading zero / ... > >>>>> > >>>>> Thanks, > >>>>> > >>>>> -- > >>>>> Raul > >>>>> > >>>>> On Tue, Jun 19, 2018 at 8:15 PM Devon McCormick <[email protected]> > >>>>> wrote: > >>>>>> > >>>>>> How does "01" differ from "1" in this context? > >>>>>> > >>>>>> "readln" works for me within a session but I think James wants to do > >>>>>> something like pipe input into a J script. This is not something I've > >>>>> done > >>>>>> but it would be interesting if we can do it. > >>>>>> > >>>>>> On Tue, Jun 19, 2018 at 5:10 PM, Henry Rich <[email protected]> > >>>>> wrote: > >>>>>> > >>>>>>> ? The 01 is correct as it stands. On Windows I get correct > >>>> operation: > >>>>>>> > >>>>>>> readln =: [: (1!:01) 1: > >>>>>>> readln'' > >>>>>>> abcdefg > >>>>>>> abcdefg > >>>>>>> > >>>>>>> The first line is what I typed, the second is the JE's result > >>>>>>> > >>>>>>> Henry Rich > >>>>>>> > >>>>>>> > >>>>>>> On 6/19/2018 5:05 PM, james faure wrote: > >>>>>>> > >>>>>>>> Either way, it's no good > >>>>>>>> > >>>>>>>> ________________________________ > >>>>>>>> From: Programming <[email protected]> on > >>>>> behalf > >>>>>>>> of devonmcc <[email protected]> > >>>>>>>> Sent: Tuesday, June 19, 2018 11:00:39 PM > >>>>>>>> To: [email protected] > >>>>>>>> Subject: Re: [Jprogramming] getline > >>>>>>>> > >>>>>>>> The "01" following the "!:" is probably supposed to be "0]1". > >>>>>>>> > >>>>>>>> > >>>>>>>> Sent from my Verizon, Samsung Galaxy smartphone > >>>>>>>> -------- Original message --------From: Michal Wallace < > >>>>>>>> [email protected]> Date: 6/19/18 16:06 (GMT-05:00) To: > >>>>>>>> [email protected] Subject: Re: [Jprogramming] getline > >>>>>>>> readln =: [: (1!:01) 1: > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> On Tue, Jun 19, 2018 at 2:45 PM james faure <[email protected] > >>>>> > >>>>>>>> wrote: > >>>>>>>> > >>>>>>>> Hello, how can one read stdin one line at a time ? > >>>>>>>>> > >>>>>>>>> > >>>>>>>>> #! /usr/bin/j8 > >>>>>>>>> > >>>>>>>>> stdin'' > >>>>>>>>> > >>>>>>>>> > >>>>>>>>> is no good. > >>>>>>>>> > >>>>> ---------------------------------------------------------------------- > >>>>>>>>> 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 > >>>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> --- > >>>>>>> This email has been checked for viruses by AVG. > >>>>>>> https://www.avg.com > >>>>>>> > >>>>>>> > >>>>>>> ------------------------------------------------------------ > >>>> ---------- > >>>>>>> For information about J forums see http://www.jsoftware.com/ > >>>> forums.htm > >>>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> -- > >>>>>> > >>>>>> Devon McCormick, CFA > >>>>>> > >>>>>> Quantitative Consultant > >>>>>> ---------------------------------------------------------------------- > >>>>>> 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 > > ---------------------------------------------------------------------- > > 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
