This document contains the latest information about Dyalog APL Version 18.2.
This file is dyalog_readme.htm and is included in the help directory in the Dyalog installation.
As a result of the issues discovered in 18.0, Dyalog decided to recreate "18.1" by starting with the 17.0 code and reviewing every commit since then in turn; any commit which we were concerned about has been omitted. Once this was done, we recreated any missing functionality afresh. For various administrative reasons it has proven considerably simpler to name this newly created code as 18.2, rather than replacing the existant 18.1 with the new code. Therefore Dyalog 18.1 will never be released and instead we will skip from 18.0 to 18.2. As already mentioned, 18.2 should be functionally identical to 18.1; the underlying interpreter source code may be different, and the performance characteristics may differ too.
The intention is that this I-beam is used early on in your APL process, before you attempt to use a .NET call. The I-beam attempts to start the .NET interface and check that is
is usuable, and it is silent when doing so, except for populating the result.
Note:The result of the first call to ⌶2250 is cached: this means that if you alter the state of .NET on the machine, you will have to start a new APL process before the change is noticed.
The 18.2 documentation is included in the installation images and is available online at https://help.dyalog.com/18.2; the PDFs etc can be found at https://docs.dyalog.com/18.2.
Early releases of 18.2 had a flaw in the handling of the Create event on ⎕SE. That meant that there was a problem when using Link to launch applications directly from a directory containing source files using the LOAD parameter (see Configuration Parameters -> LOAD in the Dyalog for Microsoft Windows Installation and Configuration Guide).
If you installed 18.2.45351 or earlier then if on Windows you are using your own session file (which will always be the case if APL was installed for all users, because a local copy is made on first use), or on any platform if you have created your own modified session and you want to be able to specify
LOAD=my.directory
then you should do one of the following:
The same applies on Windows if you want to be able to right click on a directory in Windows Explorer in order to Load the contents into APL.
If you do not intend to make use of the LOAD= parameter then you do not need to follow the steps listed above.
| ID | Description |
| 4381 | The RM key only works from trace windows, it should also work from the session. |
| 5542 | ⎕DM errors when running dfns can include the undocumented and rather odd "__field_initialize_result__←" |
| 6165 | WIBNI if you could set the colour of the top left corner of a grid |
| 7680 | Editor syntax colouring does not colour one-line dfn idioms as idiom colour when editing fn. |
| 8789 | Editor: removing text in error does not always result in remaining text being correctly coloured |
| 9443 | Inserting an inner Dfn into a multi-line dfn causes surrounding keywords such as :namespace to remain in error colour |
| 9694 | Syntax colouring issue when introducing/correcting error in control structure |
| 11401 | ⎕DMX.DM is not populated when ⎕SIGNAL is called with nested right argument but ⎕DM is |
| 13218 | Syntax colouring: opening curly brace in dfn wrongly coloured red in the editor |
| 13680 | Attempting to edit a variable in a public function in an Instance results in the editor opening a new function |
| 13823 | Editor XML syntax colouring does not work on some XAML text |
| 14304 | When tracing a public instance method, <ED> on a local variable opens a new empty method window instead of opening the local var |
| 14543 | Save file content→Save as text in the workspace does not save a text variable for objects brought in via ⎕FIX |
| 14629 | ⎕DMX.DM is not populated when DWA errorx raises an error but ⎕DM is |
| 15049 | Red flickering close button when mouse is over it if no DPI scaling is on |
| 16024 | Improve description of "Disable traps in session" |
| 16050 | The description of <MA> is incorrect |
| 16054 | Named dfn idioms are coloured as errors |
| 16456 | ⌸ understands syntax errors in ⍺⍺ as something entirely else |
| 16874 | Cosmetic :Require issues |
| 17141 | Quote Quad output is not immediately flushed to RIDE |
| 17424 | ⎕DMX.Message should tell user if the clipboard cannot be updated because it is locked by another process |
| 17443 | Invalid token-related error messages are not helpful and a bit inconsitent |
| 17666 | Editor: with a new item, File->Save As updates 5176⌶0, but close the function and that info is lost |
| 17712 | Tracer identifies local variable in instance method as a new method in the underlying class |
| 17713 | Tracer identifies local variable in instance method as a new method; QT shows fn in tracer and ER jumps to top of new fn |
| 17745 | Crash in ⎕NA with a workspace whose internal link to a DLL or shared library was not properly closed |
| 17896 | Decode with single-cell right argument allows nested arrays |
| 17921 | Error caret position wrong for {(1+1 |
| 17975 | With a full filesystem, an attempt to call ⎕fcreate apparently works |
| 18132 | ⎕NR fails on dfn passed as operand from script definition |
| 18146 | Remove "Message" column from workspace explorer lists |
| 18212 | Output of text containing NL to ODE session includes spurious trailing spaces |
| 18222 | __field_initialize_result__ appears in VALUE ERROR generated inside d-op |
| 18243 | ⎕DMX error correction: Date-times must be no earlier than year -4713 in the Proleptic Gregorian Calendar |
| 18353 | (,⎕NS⍬).(∘+)∘⊢⍬ generates syserror 999; remove the "," and it's ok |
| 18364 | (0\0⍴#),←1 causes a syserror 999 |
| 18394 | 2⎕nq'.' 'setdflags' 483 ⋄ !9∘.((0∘⊥⍤¯1),(+⍴)0⍨)(5)(0 0) generates a syserror 999 (or 77) |
| 18395 | No error is generated if you make a mistake calling a multi-line dfn typed into the session while DYALOG_LINEEDITOR_MODE is on |
| 18409 | RIDE protocol: windows and linux behave differently when fixing unfixable class tied to a file with 2 ⎕FIX |
| 18411 | NONCE ERROR when trying to get the source of an unfixable class on windows |
| 18424 | Dyalog message box does not honour the custom caption setting |
| 18477 | ⎕FIX should not output status messages |
| 18509 | If a class script is open in the editor, tracing a method of the class only shows the method and not the whole script |
| 18512 | Add a helpful message to DOMAIN ERRORS on attempted operations on DECFs when ⎕FR=645 |
| 18514 | Syntax Colouring of a GUI base class in :Class is wrong |
| 18517 | Language bar tips can prevent the use of the language bar |
| 18540 | Editor no longer allows a :For :In :Endfor block to be collapsed |
| 18572 | Space between ; and name in locals lines causes name to be coloured as error |
| 18600 | Syserror on localized HTMLRenderer |
| 18606 | Spurious file associations produced when doing (2 ⎕FIX ⎕SRC ⍵) on a script that has :Require |
| 18645 | Interpreter may lose (2⎕FIX) file association after edit |
| 18718 | macOS: With an HTMLRenderer with URL www.dyalog.com, attempts to quit APL lead to an EPIPE or exit code 139 error |
| 18720 | Tracing into a function executed by ⍎, and then branching out of the function can stop in a later function |
| 18798 | ]fileassociations is broken |
| 18822 | 100% CPU loop on )LOAD of workspace containing an HTMLRenderer object |
| 18824 | Pause on error setting is not honoured when Windows APL is started from RIDE |
| 18874 | ⎕fix with a fairly horrible character vector causes 18.1 to simply vanish (Windows) |
| 18876 | Windows: ⍎⎕Using⍪←1024⍴'a' causes 18.1 to simply disappear |
| 18907 | Windows standalone editor does not use color scheme nor keystrokes saved with the product |
| 18910 | Quote Quad output from multiple threads appears on multiple lines |
| 19087 | Under RIDE, Dyalog generates a value error for a label in a namespace script method included by a class |
| 19123 | DWA gets wrong definitions for ARRAY_ISNUMB etc in eltypes.h because of overuse of AP_BUILD |
| 19179 | The managed DWA interface does not use the portable BOUND type for array dimensions |
| 19288 | Find/Find Objects & Quicksearch: if the search string cannot be in word (eg ⍸) then assume that Match Whole Word is not selected |
| 19340 | Editing a function that resided in a shared code file can cause a syserror |
| 19393 | Odd dangling word From if you try to )continue from within ⎕SE |
| 19456 | After calling ⎕using, 2017⌶⍬ generates a syserror 999 whereas 2017⌶'' is ok |
| 19485 | 8415⌶ should not accept decfs, and should not return decfs |
| 19587 | Form does not go away until garbage collection when a reference to the form is passed to a dfn |
| 19608 | Launch interpreter on files other than .DWS: don't pass arg to invoked function if it is niladic |
| 19624 | ⎕fx'foo' ':attribute##a' and similarly ill-defined :attribute statements generate syserror 999s |