I have a few questions about using K (not q) in kdb+.
Firstly, I know that you can use a slash to go to K mode in the interactive interpreter:
ryan@DevPC-LX:~$ q
KDB+ 3.2 2015.03.04 Copyright (C) 1993-2015 Kx Systems
l32/ 4()core 5862MB ryan devpc-lx 127.0.1.1 NONEXPIRE
Welcome to kdb+ 32bit edition
For support please see http://groups.google.com/d/forum/personal-kdbplus
Tutorials can be found at http://code.kx.com/wiki/Tutorials
To exit, type \
To remove this startup msg, edit q.q
q)9#!4
'!
q)\
9#!4
0 1 2 3 0 1 2 3 0
How do a run a K script? Putting a slash at the top does nothing. I thought:
$ q x.k
would automatically use K because of the file extension…but it doesn’t.
Also, is it possible to access a kdb+ database from K, *not* q?
–
Ryan
[ERROR]: Your autotools build scripts are 200 lines longer than your program. Somethings wrong.
http://kirbyfan64.github.io/
Hi,
kdb understands the .k extension and reads it as K code (many Q functions are implemented in the file q.k):
$ echo ‘9#!4’ > ./q/a.k
$ ./q.sh
KDB+ 3.2 2015.04.23 Copyright (C) 1993-2015 Kx Systems
m32/ 8()core 10240MB trodrigues tiagos-macbook-pro.local 172.20.10.2 NONEXPIRE
Welcome to kdb+ 32bit edition
For support please see http://groups.google.com/d/forum/personal-kdbplus
Tutorials can be found at http://code.kx.com/wiki/Tutorials
To exit, type \
To remove this startup msg, edit q.q
q) \l a.k
0 1 2 3 0 1 2 3 0
You can also define K functions in Q (or in a Q script) if you precede it by k) :
q)k)9#!4
0 1 2 3 0 1 2 3 0
Note: you can’t mix K and Q code on the same function
Regarding the database, you can, since tables in Q are a flipped dictionary (take a look at q.k). But why would you not use Q for that?
Hope it helps
On June 2, 2015 2:19:01 PM CDT, Tiago Rodrigues wrote:
>Hi,
>
>kdb understands the .k extension and reads it as K code (many Q
>functions
>are implemented in the file q.k):
>
>$ echo ‘9#!4’ > ./q/a.k
>
>$ ./q.sh
>
>KDB+ 3.2 2015.04.23 Copyright (C) 1993-2015 Kx Systems
>
>m32/ 8()core 10240MB trodrigues tiagos-macbook-pro.local 172.20.10.2
>NONEXPIRE
>
>
>Welcome to kdb+ 32bit edition
>
>For support please see
>http://groups.google.com/d/forum/personal-kdbplus
>
>Tutorials can be found at http://code.kx.com/wiki/Tutorials
>
>To exit, type
>
>To remove this startup msg, edit q.q
>
>q)l a.k
>
>0 1 2 3 0 1 2 3 0
But can I launch it from the command-line?
>
>You can also define K functions in Q (or in a Q script) if you precede
>it
>by k) :
>
>q)k)9#!4
>
>0 1 2 3 0 1 2 3 0
>
>
>Note: you can’t mix K and Q code on the same function
>
>Regarding the database, you can, since tables in Q are a flipped
>dictionary
>(take a look at q.k). But why would you not use Q for that?
Just a little experiment…I kind of like k a little better than q. I prefer typing short operators.
>
>Hope it helps
>
>On Tuesday, 2 June 2015 19:17:09 UTC+1, Ryan Gonzalez wrote:
>>
>> I have a few questions about using K (not q) in kdb+.
>>
>> Firstly, I know that you can use a slash to go to K mode in the
>> interactive interpreter:
>>
>> ryan@DevPC-LX:~$ q
>> KDB+ 3.2 2015.03.04 Copyright (C) 1993-2015 Kx Systems
>> l32/ 4()core 5862MB ryan devpc-lx 127.0.1.1 NONEXPIRE
>>
>> Welcome to kdb+ 32bit edition
>> For support please see
>http://groups.google.com/d/forum/personal-kdbplus
>> Tutorials can be found at http://code.kx.com/wiki/Tutorials
>> To exit, type
>> To remove this startup msg, edit q.q
>> q)9#!4
>> '!
>> q)
>> 9#!4
>> 0 1 2 3 0 1 2 3 0
>>
>> How do a run a K script? Putting a slash at the top does nothing. I
>> thought:
>>
>> $ q x.k
>>
>> would automatically use K because of the file extension…but it
>doesn’t.
>>
>> Also, is it possible to access a kdb+ database from K, not q?
>>
>> –
>> Ryan
>> [ERROR]: Your autotools build scripts are 200 lines longer than your
>> program. Somethings wrong.
>> http://kirbyfan64.github.io/
>>
>>
–
Sent from my Android device with K-9 Mail. Please excuse my brevity.