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jim1

I think it can be interpreted as "connect to localhost:5010" - meaning "connect to the tickerplant". It might not be running on localhost of course, depending on your setup. It's a command-line argument to feed.q, rather than the q interpreter itself...

jim1

q)show t:([]a:1 2 3;b:("one";"two";0nf))a b -------1 "one"2 "two"3 0n q)meta tc| t f a-| -----a| j b| C q)select from t where not all each null each ba b -------1 "one"2 "two"Or using compose, which I think makes it easier to read:q)select from t whe...

jim1

q)update a,ranks:(avg;rank a) fby a from ta ranks-------1 0 2 1 3 3.5 4 6 5 7 3 3.5 3 3.5 3 3.5 Or you could create a function, say rankp:q)rankp:{(avg;rank x) fby x}q)select a,ranks:rankp[a] from ta ranks-------1 0 2 1 3 3.5 4 6 5 7 3 3.5 3 3.5 3 3....

jim1

You can use the fby function, e.g.q)l: 1 2 3 4 5 3 3 3q)(avg;rank l) fby l0 1 3.5 6 7 3.5 3.5 3.5James

jim1

1 is the file-handle for stdout, 2 is the file-handle for stderr. @ is applying the functions 1 and 2 using the argument you provided, e. See here for more info: http://code.kx.com/wiki/Reference/AtSymbol "A monadic function g with argument d can be ...

jim1

Using .h.hy to wrap the response body in valid HTTP headers, and .j.j to convert the response dictionary to JSON:q)response:enlist[`node_key]!enlist["this_is_a_node_secret"]q)q).z.pp:{:.h.hy [`txt;.j.j response]}Testing with curl:curl --data '' http:...

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