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
