return number of inputs into a function

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1

is there a good way to return the max number of arguments that you can enter into a function? i tried
f:{x+y+z}

while[{.[f;x;“ERROR”]} ) <> “ERROR”; count x] where x: til 5

2

Hi Ben,

you can use the value function on your function to get a summary of its structure, including the parameter list:

q)f:{x+y+z}q)value f0x7a794178410003xyzsymbol$(),5 3 4 1 2"..f"“”-1"{x+y+z}"q)count value[f] 13`

NB: the structure of the result of this functions subject to change between versions. See https://code.kx.com/q/ref/value/#lambda