Ray, Only if left args does NOT involve selective or indexed assignment will the function be called once. Instead of (,ABC2) { toLower a} <- 0 ABC2 ...
... Thank you! I suspected something like that but didn't have time to experiment. I am sure there must be cases where fn is a primitive where the implitic...
For those in the NYC area , allow me to invite you to my 19th MidWinter gathering coming this Friday at a new Gallery in the South Bronx . A bit of a way to...
I think that the implementation of each operator by Dyalog APL has a flaw. Let us consider the monadic primitive each and write : (0 rho leftshoe zilde) match...
The thinking behind Dyalog's implementation of each on null arrays is that the prototypical item of the result is determined by the _function_, rather than the...
Gianluigi's RANK ERROR is because the prototype of zilde, scalar zero, is being indexed. D:op each, below, gets round the problem of RANK, INDEX, DOMAIN etc....
Very surprising. Many thanks for your explanation. After the end of Milan's weird carnival (saturday feb 12) my mind shall be more quiet and I will try to...
My opinion is that your "each" has a better consistency than primitive each. Thanks. Gianluigi ... From: Phil Last To: dyalogusers@yahoogroups.com Sent:...
I'm pretty happy with the existing definition. I used to think it would be nice if there were a shortcut way to define the result of a prototype call in a...
... Not at all. Rho always returns a numeric result, even when it's a zero- length numeric result; so naturally it won't match anything derived from the...
Sorry, I didn't graduate my words. When I wrote the related message, I was not able to understand the reasons behind the behaviour of monadic each applied to a...
If you're going to have null prototypes, I don't think there's any other solution BUT to call the operand. How else would the interpreter know what the...
Ideally, "each" should never cause an error for a monadic function with an empty argument. Perhaps each could return the Dyalog result if it can; if the...
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Does anybody know of any type of technical analysis that is performed with APL. In particular, does anyone know of an APL workspace that contains functions to...
... Publicly (freely?) available - nothing comprehensive that I know of. At the naive level, things like moving average are trivial to implement. In the form...
Dyticus, it is likely you will have to write your trading functions from scratch since there are few workspaces of this type that are made public. I think you...
Hello Harry APL, Thank you for the information. I am disappointed to learn that workspaces dealing with technical analysis are not made public. As far as...
Dytiscus, Very interesting. I've been looking at how to do an API for Interactive Brokers because of their Ideal Pro platform for forex trading. I have two...
the dim misty memory of a Sharp APL Tecnical Note [a "satan"] had a two line snipet of code that implimented a kalman filter and used wheat futures as an...
TonyC
tclviii-dyalog@...
Feb 26, 2005 3:20 pm
1416
Hello, Do you work for many hours in the PC? Then, its better to learn about Diabetes as it can come to anyone at any age regardless of your family background!...
Hi all, I'm not sure wether this is the right group for my question, but as Dyalog APL is involved I hope it might be... I have a strange problem with the...
... Sounds like a bug in IE. Have you tried using Firefox instead? See http://www.getfirefox.com if you don't already have it ... Apart from that, I wonder...
Dear Mr Chaudhary You make an excellent point. Arthur Whitney, author of the A+, K and Q languages, tackled this point in his address at the Royal Society in...
What's wrong with the picture below? Or, is it right? Thanks to anyone for explaining the two items able to evade the penetrating gaze of the DISPLAY...
I think Phil is right. DISPLAY uses []FMT, which formats the backspace character as a 0-column matrix. Perhaps DISPLAY should show a squish or blank for...
I'm a little confused. Is the zero'th item character data? That is, []io 0 []av <iota > qq[0] DOMAIN ERROR []AV <iota> qq[0] ^ Some of you may recognize qq as...
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