Hi,I would like to use lz4 as file compression instead of gzip as it is
much faster .Is there any way to use it with KDB+ (with -19! and
.z.zd)? Unfortunately I cannot use filesystem compression (zfs would
support lz4).I tried gzip and kdb-ipc com...
Hi,in many programming languages I can quicky returnan entry in an
Hashmap or fill (=calculate) it and return the result ifits not in the
map yet;For example in Coffeescript:func:(x)->Cache[x] or=calculate
xCurrently my best effort in k is
Hi,i am trying to get the first index of the smallest element in a list.
As I think there is no predefined function to do this i tried some
different functions:v:10000000?10000000 /testvector of random ints/first
one: give first index of sorted index...
`d is the name of the variable. If you write d the value is referenced.
thats also the reason why you do updates with "update x:1 from
`tbl"while writing "update x:1 from tbl" does NOT update the table but
return a new one.value of a function returns...
unfortunately this is not the result I want. I want
this:q)a:(date:2014.01.01 2014.01.03 2014.01.05; a:1 2
3)b:(date:2014.01.01 2014.01.04 2014.01.05; b:4 5
6)q)aj[`date;aj[`date;(date:asc distinct a[`date],b`date);a];b]q)date