Get the name of symbol inside a function [duplicate]

Question

I have a list t1Funcsv0={0.10000000000, 1.00000*10^-7} and I have a function

Maximum[functions_, min_, max_, type_] := (
Which[
Flatten[Position[functions, Max[functions]]], 
Max[functions] == nt,
Flatten[Position[functions, nt]], 
RankedMax[functions, 2] == nt,
Flatten[{Position[functions, Max[functions]],Position[functions,nt]}],
True, 
Print["Error Maximum"]])

to which I pass t1Funcsv0 as well as other arguments. I would like to get the name of the symbol "t1Funcsv0" inside the function Maximum. I tried to use SymbolName[Unevaluated@functions] as I found in Obtaining the name of a variable as a string and Get the name of a symbol passed to a function but it doesn't work because "functions" is already evaluated

Answer 1

You have to use a Hold attribute if you want access to the symbol name during evaluation:

Attributes[myfunc] = HoldFirst;
myfunc[arg1_, arg2_] := (
  Print["The name of the first argument is ", SymbolName[Unevaluated[arg1]]];
  Print["The value of the first argument is ", arg1];
  Print["The max of the first argument is ", Max[arg1]];
  Print["The second argument is ", arg2]
  )

t1Funcsv0 = {0.10000000000, 1.00000*10^-7}
myfunc[t1Funcsv0, bob]

The name of the first argument is t1Funcsv0

The value of the first argument is {0.1,1.*10^-7}

The max of the first argument is 0.1

The second argument is bob