Hello Oleg;
Well, less generic because it assumes base 10. (Okay, I don't know how
to produce based output, but I'm sure it may be in a future J.)
BTW, wouldn't
([: }. [: ": 10&[EMAIL PROTECTED] + ])"0
also work? Or, is there an edge case, besides:
5 ([EMAIL PROTECTED] {. [: ": 10&[EMAIL PROTECTED] + ]) _123
99877
Oleg Kobchenko wrote:
I think to use take with fill {.!.'0' is the
best generic method, but just for the record,
here's another yet more generic one:
zeropad=: ([EMAIL PROTECTED] {. [: ": 10&[EMAIL PROTECTED] + ])"0
5 zeropad 123 1234
00123
01234
2 5 zeropad&.> 123 1234
+--+-----+
|23|01234|
+--+-----+
--- Randy MacDonald <[EMAIL PROTECTED]> wrote:
Hello Chris et al;
The documentation labels the r<..> tag as 'background text,' a term
which doesn't strike me as mainstream. I would think of it more as
'blank prefix fill' or at least some phrase containing the word 'fill.'
Its meaning is obvious once one knows the meaning.
That being said, I noticed one could get zero fill with use of
Custom(!.) on Take ({.):
_10{.!.'0']":12
0000000012
Chris Burke wrote:
Alex Rufon wrote:
I've been using the standard ": function for a while and I wanted to use
the new one ... 8!:0. Unfortunately, the documentation kept throwing me
For a real world example, since my work normally interfaces with SAP and
AS400 systems ... I normally have to format numbers with ZERO padding.
So I made this generic zero padder to handle the formatting:
zeropad=: dyad define
data=. format y
count=. x
if. count largerthan tally data do.
data=. ((count minus tally data) copy '0') append data
end.
data
)
If you run this (please load the 'primitives' library first)
5 zeropad 20
00020
So how do I do the same thing using 8!:0? I did give it a whirl and it
seems that 8!:0 only works with arrays. Hmmm. Am I missing something?
'r<0>5.0' (8!:2) 123
00123
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|\/| Randy A MacDonald | APL: If you can say it, it's done.. (ram)
|/\| ramacd <at> nbnet.nb.ca |
|\ | | The only real problem with APL is that
BSc(Math) UNBF'83 | it is "still ahead of its time."
Sapere Aude | - Morten Kromberg
Natural Born APL'er |
-----------------------------------------------------(INTP)----{ gnat }-
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--
------------------------------------------------------------------------
|\/| Randy A MacDonald | APL: If you can say it, it's done.. (ram)
|/\| ramacd <at> nbnet.nb.ca |
|\ | | The only real problem with APL is that
BSc(Math) UNBF'83 | it is "still ahead of its time."
Sapere Aude | - Morten Kromberg
Natural Born APL'er |
-----------------------------------------------------(INTP)----{ gnat }-
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