188 questions
0
votes
1
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views
Setting a minimum size for a GUI object in Dyalog APL
Is there a way to specify a minimum size for e.g. a window created with 'F'⎕WC'Form' so that I can resize the window but not make it smaller than a certain size?
- 11.4k
0
votes
0
answers
41
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Is there a way to standardise formatting in an APL Project?
I want to write a file like eslint.js file which has a standard like tab=4spaces etc.
The problem I am essentially having is that if someone uses the IDE or their own way of formatting, a lot of ...
- 75
1
vote
1
answer
67
views
Why does ⎕DIV not affect Matrix divide (⌹)?
With ⎕DIV←1, dividing by 0 does not give an error but gives a 0 every time.
When dividing by 0, ⌹ (quad divide) seems to always throw a domain error even with ⎕DIV←1.
Is there a reason why the value ...
- 75
2
votes
1
answer
65
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Can I set ]Box and ]Rows settings for new installations of Dyalog?
Sometimes I install a new version of Dyalog and I have to re-set my ]Box and ]Rows settings.
]box on -fns=on
]rows on -fns=on -fold=3
I know I can set these and then save the session file, but I can'...
- 733
1
vote
1
answer
63
views
Find locations of substrings within a string
I'm trying to find the locations of substrings within a string. Here, I can find the location of the first length-3 string ('DEF') within the larger string:
⍸(3,/'DEFGHI') ⍷ 3,/'ABCDEFGHIJKLMNOP'...
- 1,522
5
votes
1
answer
124
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Dyalog APL does sum `+/` from the wrong end, violating the specification
Of course, many functions f are not associative in the sense that a f(b f c) (which is often just written a f b f c in APL) is not always the same as (a f b)f c. This is also the case when f is ...
- 62.1k
2
votes
1
answer
38
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Dyalog APL: GUI full mode
When launching Dyalog APL, I don't have a complete interface.
How do I get the familiar interface back?
My Dyalog APL is in the screenshot below.
stackoverflow does not allow my question: it writes ...
- 343
1
vote
1
answer
74
views
APL selective assignment with commute
Selective assignment (with replicate on the left) works as expected:
d←'bob'
(1 0 0/d)←'B'
d
Bob
But the same thing (though expressed with a commute) does not:
d←'bob'
(d/⍨1 0 0)←'B'
...
- 305
2
votes
1
answer
65
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New dll in Dyalog APL
Is it possible to use a new dll in Dyalog APL? I can use the existing dll's just by setting ⎕USING, but this does not work if I download a new dll. Simply copying the dll in the directory and calling ⎕...
- 177
2
votes
1
answer
49
views
Showing a window resize grip
A simple window created with 'F'⎕WC'Form' can be resized by the user but there is no resize grip in the lower right corner. If we add a status bar with 'F.SB'⎕WC'StatusBar', however, the grip is shown....
- 11.4k
2
votes
1
answer
57
views
How to Import an APL namespace?
Let's say I have the following namespace in the APL file F.apln:
:Namespace F
foo←{...}
:Endnamespace
I want to import this namespace in another namespace and use it. For example:
IMPORT F
:...
- 75
1
vote
1
answer
35
views
Setting the vertical alignment of grid cells
Is there a way to align the top of the cell entries in a grid row when the cells contain text that spans more than one line?
Example:
Test
'F'⎕WC'Form'
'F.G'⎕WC'Grid'('Values'(1 2⍴('foo',[0.5]'bar')'...
- 11.4k
2
votes
1
answer
145
views
Dyalog APL Parser
I'm looking for a parser for Dyalog APL similar to aplparse, but one written either in APL itself or offered as part of the Dyalog engine. I'll be manipulating the AST in an APL program, which is why ...
- 75
0
votes
1
answer
85
views
dyalog apl recognized idiom for `and` reduction
In Dyalog APL, could G be recognized as an idiom that evaluates to F since F is more efficient?
In order to do that maybe the interpreter first needs to know if it has a boolean array argument?
...
- 305
1
vote
1
answer
95
views
Dyalog APL: How to filter an array like filter() but more weakness
How to change the solution from the answer to the question Dyalog APL: How to filter an array like filter()
To:
it performed an incomplete match search
ignoring the case
Original solution:
...
- 343