In this case,
I prefer:
(+/,:-/)
also possible:
($$ +/,-/)
+/`(-/)`:0
Ben Gorte - CITG schreef op 27-01-15 om 15:01:
Well, for compensation I can show you one of my blind spots.
A simple function f like
f =. 3 5&*
behaves as:
f 4 9
12 45
f i. 2 5
0 3 6 9 12
25 30 35 40 45
and I like that.
But, for example,
g =: (+/) , -/
behaves differently:
g 4 9
13 _5
g i. 2 5
5 7 9 11 13 _5 _5 _5 _5 _5
To get f's behaviour, in terms of output shapes, I use:
g =: |: @: ((+/) ,. -/)
Now
g 4 9
13 _5
g i. 2 5
5 7 9 11 13
_5 _5 _5 _5 _5
But somehow this doesn't feel right. What am I missing?
Ben
________________________________________
From: [email protected]
[[email protected]] on behalf of R.E. Boss
[[email protected]]
Sent: Tuesday, January 27, 2015 14:24
To: [email protected]
Subject: Re: [Jprogramming] Behead along all axes
I feel embarrassed.
Thnx.
R.E. Boss
-----Original Message-----
From: [email protected] [mailto:programming-
[email protected]] On Behalf Of Ben Gorte - CITG
Sent: dinsdag 27 januari 2015 13:39
To: [email protected]
Subject: Re: [Jprogramming] Behead along all axes
Why not
<"(2) 1 1 1 1 }. i.3+i.4
?
(or am I missing something?)
Ben
________________________________________
From: [email protected] [programming-
[email protected]] on behalf of R.E. Boss
[[email protected]]
Sent: Tuesday, January 27, 2015 12:48
To: [email protected]
Subject: [Jprogramming] Behead along all axes
My solution is ( <"2 is for presentation reasons)
<"2 ({~[:< [:}.L:0 [:<@i."0 $) i.3+i.4
+-------------------+-------------------+-------------------+
|157 158 159 160 161|187 188 189 190 191|217 218 219 220 221|
|163 164 165 166 167|193 194 195 196 197|223 224 225 226 227|
|169 170 171 172 173|199 200 201 202 203|229 230 231 232 233|
|175 176 177 178 179|205 206 207 208 209|235 236 237 238 239|
+-------------------+-------------------+-------------------+
|277 278 279 280 281|307 308 309 310 311|337 338 339 340 341|
|283 284 285 286 287|313 314 315 316 317|343 344 345 346 347|
|289 290 291 292 293|319 320 321 322 323|349 350 351 352 353|
|295 296 297 298 299|325 326 327 328 329|355 356 357 358 359|
+-------------------+-------------------+-------------------+
Any elegant alternatives?
R.E. Boss
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Met vriendelijke groet,
@@i = Arie Groeneveld
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