Q:

Possible to use Google Spreadsheet functions in Google App Script?

I just discovered Google App Scripts, and I'm stumped on something already... 
I am trying to write a script for a Google Spreadsheet which finds certain historical stock prices. I found that the FinanceApp service within Google App Scripts has been deprecated, and seemingly replaced by the GOOGLEFINANCE() function within Google Spreadsheets. However, it returns an array, when I need only a single cell, and the array is mucking up the works. 
So I'd like to write a short script that calls the GOOGLEFINANCE() spreadsheet function, and finds just the 1 piece of info I need from the array which is returned by GOOGLEFINANCE(). However, I cannot find a way to access Spreadsheet Functions (SUM, VLOOKUP, GOOGLEFINANCE, etc) within a script. 
Is there a way to access these functions in a script? Or perhaps, is there a new service which replaces the deprecated FinanceApp service?
Many thanks for any assistance!

A:

Native Spreadsheet functions are not supported in Google Apps Script.
You could eventually use a somewhat cumbersome workaround by reading the value of a cell in which you write a formula (using script in both write and read) but this will be less than practical and / or fast.

