How to evaluate a spreadsheet formula within a custom function?

Question

In a spreadsheet I can enter =SIN(45)+123 in a cell, and it will be evaluated.

How can I evaluate spreadsheet functions within a custom function, something like an "eval" function that would work like this :

function myFunc() {
  return Sheet.eval("=SIN(45)+123")
}

is it possible ?

Note that I don't care about the SIN function in particular, what I want is to have access to the complete arsenal of spreadsheet functions (PMT, QUERY, NPER, etc..)

Answer 1

Spreadsheet functions from Apps-Script

Not possible - This has been asked many times. Suggest you check the google-apps-script issue list to see if anything has changed. But last I checked, there is no way to do it, and they have no plan to add it. https://code.google.com/p/google-apps-script-issues/issues/list

Ethercalc - java script spreadsheet formulas

If you need to, you can always copy the code from "ethercalc" as it has a java script versions of the spreadsheet formulas. https://github.com/audreyt/ethercalc