> Is there a way in Wolfram to check whether all function names exist ? There is a way to check whether a symbol has been defined: ValueQ[FunctionName, Meth

> Is there a way in Wolfram to check whether all function names exist ? There is a way to check whether a symbol has been defined: ValueQ[FunctionName, Method -> "SymbolDefinitionsPresent"] See https://reference.wolfram.com/language/ref/ValueQ.html https://reference.wolfram.com/language/ref/ValueQ.html Replace FunctionName by the function name that you want to check.