Correction; to feed it a var, simply catenate the file name like: FILE←¯1↓‘)HOST cat ‘ , filename←’relative_or_absolute/path/to/blablabla.txt’ Keep in mind your current dir is the one you started GNU APL from, so it can change. Using ~/… or an absolute path is probably safer.
Louis > On 06 Mar 2016, at 01:35, Louis de Forcrand <ol...@bluewin.ch> wrote: > > I am not very good with files and such, but from what I understand: > > ⎕←T←⊃¯1↓⍎')HOST date' > Sun Mar 6 01:11:48 CET 2016 > > ⍴T > 2 28 > > So you can save the result of )HOST in a variable if you use > ⍎. To feed it a var, I would try something like: > > ]BOXING 2 > ⎕←FILE←⍎')HOST cat test.txt' > hello, world This file was written in my $HOME directory. 0 > ⍴FILE > 5 > FILE > .→-----------. .⊖. .→-------------------------------------------. .⊖. .→-. > |hello, world| | | |This file was written in my $HOME directory.| | | |0 | > '------------' '-' '--------------------------------------------' '-' '--' > > Several things to note here. First of all, linefeeds / carriage returns / > whatever > you want to call them in the file I read seemed to mark nested array ends, and > it seems that those LFs were lost. I don’t know how GNU APL handles LF chars, > so I would recommend you either keep the array boxed or disclose it like I did > in the first example (∊ enlisting it simply catenated all the lines together, > as > the LFs were represented by ⊂⍬, boxed empty vectors). > > Second, if you’re reading this Jürgen, note that even though ]BOXING was set > to 2, the result of ⎕←FILE is not boxed. > > IMHO this is potentially the cleanest way to read a file. I have no idea how > to tie > files and stuff like that. > > Best of luck, > Louis > >> On 05 Mar 2016, at 03:54, alexwei...@alexweiner.com >> <mailto:alexwei...@alexweiner.com> wrote: >> >> Hi Bug-apl, >> >> Currently, at a point in my code I do something like this: >> >> ⍝assume the variable 'yadda' exists and is correctly formed, as well as the >> read_file function >> success←yadda ⎕fio[7] tie← 'wr'⎕FIO[3] "yadda.file" >> )host ./shellscript.sh <http://shellscript.sh/> yadda.file yadda.file.new >> yadda_new← read_file "yadda.file.new" >> ⍝end of code >> >> My question is: is there either 1. a way to feed )host a variable (I don't >> think that is possible) or 2. a better way to implement this task in its >> entirety. I find it a small nuisance that I have to write and then read a >> file in my code to access non-APL stuff for processing. >> >> -Alex >
