CS50R - Lecture 7 - Packaging Programs | CS50

The lecture focuses on how to package programs in R, specifically creating a package called "DuckSay." The goal of DuckSay is to take a character string as input and output a textual representation of a duck "saying" that string. The discussion covers the structure of R packages, including the DESCRIPTION file, NAMESPACE, man folder for documentation, and the R folder for function definitions. It also introduces the "devtools" package, which helps in writing packages, unit testing with "testthat," and structuring package components. The lecture further explains how to document functions using R's markup language and how to build and install the package for sharing.

Outlines

Part 1: Introduction, Package Structure

Part 2: Development Tools, Testing

Part 3: Implementation, Documentation

Part 4: Building, Iteration, Sharing

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CS50R - Lecture 7 - Packaging Programs

CS50

Part 1: Introduction, Package Structure

Introduction to R Package Creation: Building DuckSay

Understanding R Package Structure: Source Code and Conventions

Creating the DESCRIPTION File: Package Metadata

Defining Authors and License: Using the person Function and MIT License

Part 2: Development Tools, Testing

Utilizing devtools for Package Development: Setting Up Unit Tests

Writing Unit Tests for DuckSay: Testing Console Output and String Matching

Part 3: Implementation, Documentation

Creating the DuckSay Function: Combining Strings with Paste

Loading and Testing the DuckSay Function: Using loadAll and test

Enhancing Unit Tests: Verifying Duck Inclusion and Regular Expressions

Documenting the DuckSay Function: Creating .rd Files and Using Markup Language

Part 4: Building, Iteration, Sharing

Building the Package: Converting Source Code to a Single File

Updating the DuckSay Function: Accepting Input Phrases

Using and Sharing the Package: Creating a Greet Program and Installation

CS50R - Lecture 7 - Packaging Programs

CS50

Part 1: Introduction, Package Structure

00:20Introduction to R Package Creation: Building DuckSay

Introduction to R Package Creation: Building DuckSay

01:14Understanding R Package Structure: Source Code and Conventions

Understanding R Package Structure: Source Code and Conventions

03:53Creating the DESCRIPTION File: Package Metadata

Creating the DESCRIPTION File: Package Metadata

05:36Defining Authors and License: Using the person Function and MIT License

Defining Authors and License: Using the person Function and MIT License

Part 2: Development Tools, Testing

11:35Utilizing devtools for Package Development: Setting Up Unit Tests

Utilizing devtools for Package Development: Setting Up Unit Tests

14:19Writing Unit Tests for DuckSay: Testing Console Output and String Matching

Writing Unit Tests for DuckSay: Testing Console Output and String Matching

Part 3: Implementation, Documentation

21:14Creating the DuckSay Function: Combining Strings with Paste

Creating the DuckSay Function: Combining Strings with Paste

26:23Loading and Testing the DuckSay Function: Using loadAll and test

Loading and Testing the DuckSay Function: Using loadAll and test

29:24Enhancing Unit Tests: Verifying Duck Inclusion and Regular Expressions

Enhancing Unit Tests: Verifying Duck Inclusion and Regular Expressions

32:36Documenting the DuckSay Function: Creating .rd Files and Using Markup Language

Documenting the DuckSay Function: Creating .rd Files and Using Markup Language

Part 4: Building, Iteration, Sharing

39:11Building the Package: Converting Source Code to a Single File

Building the Package: Converting Source Code to a Single File

41:39Updating the DuckSay Function: Accepting Input Phrases

Updating the DuckSay Function: Accepting Input Phrases

46:10Using and Sharing the Package: Creating a Greet Program and Installation

Using and Sharing the Package: Creating a Greet Program and Installation