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Resolved! Key value pairs in dictionary, and how to retrieve them given one?

I'm wondering on how to retrieve the key given the value of a dictionary? The way to get value given the key is array[key] - this will output the value, but what if I have the value and am looking to get the key?

Resolved! Is there a way to load a q-script from the internet without saving it at disk?

Currently if I want to import a q-script, e.g. sp.q, from the internet, I need to save it to disk and then load it. system "wget https://raw.githubusercontent.com/KxSystems/kdb/master/sp.q";\l sp.q But if I want to do the \l to the url directly witho...

Resolved! If conditions $ vs ?

Sometimes i wonder how the $ differs with ? since most of the times both of them returning the same results. Not sure when to use $ and ?. Help me to understand this guys! q)$[1b;`true;`false]`trueq)?[1b;`true;`false]`trueq)t:([]name:enlist `hi)q)tna...

Resolved! How to make two referencing sub-projection works?

I have below code, which doesn't work. h and g are 2 projections defined inside f, and they are referencing to each other. Theorectically, the answer should be: f[10]=g[10] =h[8] + 20 =g[5] + 30 + 20 =h[3] + 20 + 30 + 20 =g[0] + 30 + 20 + 30 + 20 =h[...

Resolved! How to write local function which can be called from different levels

Hi, My code below works without error: No Error g:`;g:{[xG] xG + 2}; // global; works for f and hf:{[xF] h:{[xH] g[xH] + 3};show g[xF] + h[xF];}f[40]; // i.e. 87; no error However, I prefer a local g instead of a local one. I also tried below, but bo...

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