Ruby Metaprogramming Project

This project is part of the "Script Languages" subject and demonstrates the use of metaprogramming in Ruby.

Overview

This repository contains a Ruby library that implements various functionalities for handling tabular data. The primary file for examples and usage is app.rb.

Project Description

The project requirements and their corresponding implementation points are outlined below:

Requirements and Implementation Points

1. Return 2D array with table values
2. Access rows via t.row(1) and elements using array syntax
3. Implement Enumerable module with each function to iterate through cells
4. Handle merged fields within the library
5. Enhance syntax for accessing specific values
   • Retrieve an entire column: t["First Column"]
   • Access column values: t["First Column"][1] for the second element
   • Set cell value: t["First Column"][1] = 2556
6. Allow direct column access via corresponding methods
   • t.firstColumn, t.secondColumn, t.thirdColumn
   • Calculate subtotal/average: t.firstColumn.sum, t.firstColumn.avg
   • Retrieve a row based on a cell value: t.index.rn2310
   • Support functions like map, select, reduce
7. Recognize and ignore rows containing keywords like "total" or "subtotal"
8. Enable addition of two tables with identical headers (SQL UNION operation)
   • t1 + t2 combines rows from both tables
9. Allow subtraction of two tables with identical headers
   • t1 - t2 removes rows from t2 that match t1

Not done

• Implementation of functionality for point 7.