Re: APL Christmas 2020 doodle: Tree
Thank you so much for a rapid answer. With no background into the history of the language, I would not have known where to look for this sort of thing. I see now in Dyalog's "Mastering Dyalog APL, 1st Ed.", ~p372 "Specialists Section" there are discussions about this and related language differences. There are a few items to digest there in regards to their ⎕ML System Variable and how it handles APL2 (IBM) vs. Dyalog APL dialects. The more I explore, the more I question whether I must choose to study "the APL2 path" or "the Dyalog APL path" ... :) I hope I do not have to choose! So far, trying both dialects while learning has illuminated some concepts for me, but I fear I might confuse myself with implementation differences. Again, thank you very much for the insight. -Russ On Wed, 23 Dec 2020 at 23:21, Kacper Gutowski wrote: > On Wed, Dec 23, 2020 at 10:46:13PM -0800, Russtopia wrote: > > [Dyalog] > > 9 2 9/↑'∘⌹∘' ' ⌹ ' > > ∘⌹⌹∘ > > ⌹⌹ > > > > [GNU] > > 9 2 9/↑'∘⌹∘' ' ⌹ ' > > ∘⌹⌹∘ > > > > Is it unexpected that GNU APL does not apply the Compress (/) across > > multiple right-hand items? > > There are some subtle differences in how / works in Dyalog and in GNU APL, > but here the reason is much more prosaic. > > By default the monadic ↑ and ⊃ are swapped in Dyalog. It has a setting > called ⎕ML that controls it, and if you set ⎕ML←2, it will interpret > this expression the same way GNU APL does: > >9 2 9/⊃'∘⌹∘' ' ⌹ ' > ∘⌹⌹∘ > ⌹⌹ > > > -k >
Re: Library settings fail
Hi Hans-Peter, thanks, see below. Best Regards, Jürgen On 12/24/20 12:25 AM, Hans-Peter Sorge wrote: Hi, A bit strange, as I did not notice it up to now. This is the starting point [joy@joyw520 WSTEST]$ ll insgesamt 4 drwxrwxr-x. 2 joy joy 4096 23. Dez 23:34 wslib2 Creating a name . [joy@joyw520 WSTEST]$ touch wslib2/LLLTTT.apl Starting APL [joy@joyw520 WSTEST]$ apl -q ⍝ works as expected ... )libs Library root: /home/joy/WSTEST Library reference number to (absolute) path mapping: ╔═══╤═╤═╤══╗ ║Ref│Conf │State (errno)│ Path to the directory containing the workspace files ║ ╟───┼─┼─┼──╢ ║ 0 │PUSER│ present │ /home/joy/workspaces ║ ║ 1 │PUSER│ present │ /home/joy/GNUAPL ║ ║ 2 │PWD │ present │ /home/joy/WSTEST/wslib2 ║ ║ 3 │PUSER│ present │ /usr/local/lib/apl/wslib3 ║ ║ 4 │PUSER│ present │ /usr/local/lib/apl/wslib4 ║ ║ 5 │PUSER│ present │ /usr/local/lib/apl/wslib5 ║ ║ 6 │PWD │ missing (2) │ /home/joy/WSTEST/wslib6 ║ ║ 7 │PWD │ missing (2) │ /home/joy/WSTEST/wslib7 ║ ║ 8 │PWD │ missing (2) │ /home/joy/WSTEST/wslib8 ║ ║ 9 │PWD │ missing (2) │ /home/joy/WSTEST/wslib9 ║ ╚═══╧══╤══╧═╧══╝ │ ├── NONE: found no method to compute the library path ├── CMD: the path was set with )LIBS N path ├── ENV: the path came from environment variable $APL_LIB_ROOT ├── PSYS: the path came from the system preferences in file │ /usr/local/etc/gnu-apl.d/preferences ├── PUSER: the path came from user preferences in file │ $HOME/.config/gnu-apl or $HOME/.gnu-apl └── PWD: the path is relative to current directory $PWD (last resort) ⍝ I got the name. OK )lib /home/joy/WSTEST/wslib2 LLLTTT ⍝ 2 works too .. )lib 2 LLLTTT ⍝ ⍝ Next seems to be a bug ⍝ I want to use the library path /home/joy/WSTEST/wslib2 .. )libs 2 LIBRARY ROOT SET TO 2 But what you are actually doing is to set the library root (= the path to the directory which contains all libraries) to 2. You probably meant to say )libs /home/joy/WSTEST )lib 2 IMPROPER LIBRARY REFERENCE '2': No such file or directory So you want to display the content of .../2/wslib2 ? ⍝ Thats not expected .. )libs Library root: /home/joy/WSTEST/2 ⍝ The library path /home/joy/WSTEST/wslib2 can NOT be set ... ⍝ Library reference number to (absolute) path mapping: ╔═══╤═╤═╤══╗ ║Ref│Conf │State (errno)│ Path to the directory containing the workspace files ║ ╟───┼─┼─┼──╢ ║ 0 │PUSER│ present │ /home/joy/workspaces ║ ║ 1 │PUSER│ present │ /home/joy/GNUAPL ║ ║ 2 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib2 ║ ║ 3 │PUSER│ present │ /usr/local/lib/apl/wslib3 ║ ║ 4 │PUSER│ present │ /usr/local/lib/apl/wslib4 ║ ║ 5 │PUSER│ presen
Re: Library settings fail
Hi Jürgen, sorry for the noise. Before I tried )LIBS 2 MYNAME and it failed - no idea why. Ok now. But that failure let me try the other thingies - obsolete now. Best Regards a Merry Christmas and a Happy New Year Hans-Peter Am 24.12.20 um 12:31 schrieb Dr. Jürgen Sauermann: Hi Hans-Peter, thanks, see below. Best Regards, Jürgen On 12/24/20 12:25 AM, Hans-Peter Sorge wrote: Hi, A bit strange, as I did not notice it up to now. This is the starting point [joy@joyw520 WSTEST]$ ll insgesamt 4 drwxrwxr-x. 2 joy joy 4096 23. Dez 23:34 wslib2 Creating a name . [joy@joyw520 WSTEST]$ touch wslib2/LLLTTT.apl Starting APL [joy@joyw520 WSTEST]$ apl -q ⍝ works as expected ... )libs Library root: /home/joy/WSTEST Library reference number to (absolute) path mapping: ╔═══╤═╤═╤══╗ ║Ref│Conf │State (errno)│ Path to the directory containing the workspace files ║ ╟───┼─┼─┼──╢ ║ 0 │PUSER│ present │ /home/joy/workspaces ║ ║ 1 │PUSER│ present │ /home/joy/GNUAPL ║ ║ 2 │PWD │ present │ /home/joy/WSTEST/wslib2 ║ ║ 3 │PUSER│ present │ /usr/local/lib/apl/wslib3 ║ ║ 4 │PUSER│ present │ /usr/local/lib/apl/wslib4 ║ ║ 5 │PUSER│ present │ /usr/local/lib/apl/wslib5 ║ ║ 6 │PWD │ missing (2) │ /home/joy/WSTEST/wslib6 ║ ║ 7 │PWD │ missing (2) │ /home/joy/WSTEST/wslib7 ║ ║ 8 │PWD │ missing (2) │ /home/joy/WSTEST/wslib8 ║ ║ 9 │PWD │ missing (2) │ /home/joy/WSTEST/wslib9 ║ ╚═══╧══╤══╧═╧══╝ │ ├── NONE: found no method to compute the library path ├── CMD: the path was set with )LIBS N path ├── ENV: the path came from environment variable $APL_LIB_ROOT ├── PSYS: the path came from the system preferences in file │ /usr/local/etc/gnu-apl.d/preferences ├── PUSER: the path came from user preferences in file │ $HOME/.config/gnu-apl or $HOME/.gnu-apl └── PWD: the path is relative to current directory $PWD (last resort) ⍝ I got the name. OK )lib /home/joy/WSTEST/wslib2 LLLTTT ⍝ 2 works too .. )lib 2 LLLTTT ⍝ ⍝ Next seems to be a bug ⍝ I want to use the library path /home/joy/WSTEST/wslib2 .. )libs 2 LIBRARY ROOT SET TO 2 But what you are actually doing is to set the library root (= the path to the directory which contains all libraries) to 2. You probably meant to say )libs /home/joy/WSTEST )lib 2 IMPROPER LIBRARY REFERENCE '2': No such file or directory So you want to display the content of .../2/wslib2 ? ⍝ Thats not expected .. )libs Library root: /home/joy/WSTEST/2 ⍝ The library path /home/joy/WSTEST/wslib2 can NOT be set ... ⍝ Library reference number to (absolute) path mapping: ╔═══╤═╤═╤══╗ ║Ref│Conf │State (errno)│ Path to the directory containing the workspace files ║ ╟───┼─┼─┼──╢ ║ 0 │PUSER│ present │ /home/joy/workspaces ║ ║ 1 │PUSER│ present │ /home/joy/GNUAPL ║ ║ 2 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib2 ║ ║ 3 │PUSER│ present │ /usr/local/lib/apl/wslib3 ║ ║ 4 │PUSER│ present │ /usr/local/lib/apl/wslib4 ║ ║ 5 │PUSER│ present │ /usr/local/lib/apl/wslib5 ║ ║ 6 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib6 ║ ║ 7 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib7 ║ ║ 8 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib8 ║ ║ 9 │PWD │ missing (2) │ /home/joy/WSTEST/2/wslib9 ║ ╚═══╧══╤══╧═╧══╝ │ ├── NONE: found no method to compute the library path ├── CMD: the path was set with )LIBS N path ├── ENV: the path came from environment variable $APL_LIB_ROOT ├── PSYS: the path came from the system preferences in file │ /usr/local/etc/gnu-apl.d/preferences ├── PUSER: the path came from user preferences in file
