Difference between revisions of "Dynamic Spreadsheet Assignment"
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Line 80: | Line 80: | ||
(error 'not-yet-implemented)) | (error 'not-yet-implemented)) | ||
− | (''' | + | ('''row-count''' hockey-spreadsheet) evaluates to '''4''' |
==row-at== | ==row-at== |
Revision as of 14:03, 30 March 2022
Contents
Motivation
Code To Use
general
void
number
string
list
Code To Implement
For clarity, we will provide what select functions evaluate to for this spreadsheet:
Name | Uniform Number | Birth Year | Games Played | Goals | Assists |
Bobby Orr | 4 | 1948 | 657 | 270 | 645 |
Wayne Gretzky | 99 | 1961 | 1487 | 894 | 1963 |
Mario Lemieux | 66 | 1965 | 915 | 690 | 1033 |
file: | src/main/racket/spreadsheet/spreadsheet.rkt | ![]() |
functions: | string->cell csv->spreadsheet row-count row-at sheet sum-row |
string->cell
(define (string->cell s) (error 'not-yet-implemented))
- if s is the empty string, evaluate to void
- if s represents a number, evaluate to that number
- if s starts with "(" and ends with ")", evaluate to a form suited for eval
- otherwise, evaluate to s
csv->spreadsheet
(define (csv->spreadsheet matrix) (error 'not-yet-implemented))
given a list of lists of strings, evaluate to a list of list of cells using #string->cell and a couple of list higher order functions.
row-count
(define (row-count sheet) (error 'not-yet-implemented))
(row-count hockey-spreadsheet) evaluates to 4
row-at
(define (row-at sheet row-index) (error 'not-yet-implemented))
sum-row
(define (sum-row sheet row-index) (error 'not-yet-implemented))
Test
file: | spreadsheet_test.rkt | ![]() |
source folder: | src/test/racket/spreadsheet |
note: ensure that you have removed all printing to receive credit for any assignment.