Techniques to make expressive toStrings on your objects

1. @LlewellynFalco
Expressive Objects
@LlewellynFalco

2. @LlewellynFalco

3. @LlewellynFalco

4. @LlewellynFalco

5. @LlewellynFalco
(LEFT SHIFT)
<<
friend std::ostream &operator<<(std::ostream &os, const YourClassName &name) {
os << "a: " << name.a;
return os;
}

6. @LlewellynFalco
XML
<book id="bk101">
<author>Gambardella, Matthew</author>
<title>XML Developer's Guide</title>
<genre>Computer</genre>
<price>44.95</price>
<publish_date>2000-10-01</publish_date>
<description>An in-depth look at creating applications with XML.</description>
</book>

7. @LlewellynFalco
JSON
{
"book": {
“id": "bk101",
"author": "Gambardella, Matthew",
"title": "XML Developer's Guide",
"genre": "Computer",
"price": 44.95,
"publish_date": "2000-10-01",
"description": "An in-depth look at creating applications with XML."
}
}

8. @LlewellynFalco
YAML
book:
id: bk101
author: Gambardella, Matthew
title: XML Developer's Guide
genre: Computer
price: '44.95'
publish_date: '2000-10-01'
description: An in-depth look at creating applications with XML.

9. @LlewellynFalco
SIMPLE
(book: id: bk101, author: Matthew Gambardella, title: XML Developer's Guide,
genre: Computer, price: '44.95’, publish_date: '2000-10-01’, description: An in-
depth look at creating applications with XML.)

10. @LlewellynFalco
SIMPLER
Book(Matthew Gambardella, XML Developer's Guide, $44.95)

11. @LlewellynFalco
FORMAT
(author, title, price) = (Matthew Gambardella, XML Developer's Guide, 44.95)

12. @LlewellynFalco
FORMAT
(author, title, price) = (Matthew Gambardella, XML Developer's Guide, 44.95)
(author, title, price) = (Woody Zuill, Mob Programming, 93.22)
(author, title, price) = (Diana Larsen, Agile Retrospectives, 4.99)
(author, title, price) = (Kent Beck, Test Driven Development, 24.15)

13. @LlewellynFalco
CSV
author, title, price
Matthew Gambardella, XML Developer's Guide, 44.95
Woody Zuill, Mob Programming, 93.22
Diana Larsen, Agile Retrospectives, 4.99
Kent Beck, Test Driven Development, 24.15

14. @LlewellynFalco
TABBED
Author | Title | price
Matthew Gambardella | XML Developer's Guide | 44.95
Woody Zuill | Mob Programming | 93.22
Diana Larsen | Agile Retrospectives | 4.99
Kent Beck | Test Driven Development | 24.15

15. @LlewellynFalco
GIRD
..........
.SSS......
.....B....
.....B....
...._*_...
.....B....

16. @LlewellynFalco
(LEFT SHIFT)
<<
friend std::ostream &operator<<(std::ostream &os, const YourClassName &name) {
os << "a: " << name.a;
return os;
}

17. @LlewellynFalco

18. @LlewellynFalco
FORMAT
(author, title, price) = (Matthew Gambardella, XML Developer's Guide, 44.95)

19. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = (Matthew Gambardella, XML Developer's Guide,
44.95)“;
return os;
}

20. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< "Matthew Gambardella"
<< ", XML Developer's Guide, 44.95)“;
return os;
}

21. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< "Matthew Gambardella"
<< ", " << "XML Developer's Guide"
<< ", 44.95)“;
return os;
}

22. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< "Matthew Gambardella"
<< ", " << "XML Developer's Guide"
<< ", " << "44.95" << ")";
return os;
}

23. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< book.name
<< ", " << "XML Developer's Guide"
<< ", " << "44.95" << ")";
return os;
}

24. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< book.name
<< ", " << book.title
<< ", " << "44.95" << ")";
return os;
}

25. @LlewellynFalco
friend std::ostream &operator<<(std::ostream &os,
const Book &book) {
os << "(author, title, price) = ("
<< book.name
<< ", " << book.title
<< ", " << book.price << ")";
return os;
}

26. @LlewellynFalco
<type> xml </type>
{ “type”: “json” }
type: yaml
(type: simple)
(simpler)
(type) = (formatted)
Type,
Csv ,
Type |
Tabbed |
Type = other?
?

27. @LlewellynFalco
RESOURCES

28. @LlewellynFalco
#ApprovalTests
#.Net #Java #C++ #Python #Perl #Ruby #Go #Javascript
Github.com/Approvals
21 episode YouTube series

29. @LlewellynFalco
#MobProgrammingGuidebook

30. @LlewellynFalco
Slides at:
THANK YOU
(PLEASE CONNECT VIA LINKEDIN AND TWITTER)
@LlewellynFalco
youtube.com/isidoreus
LlewellynFalco.Blogspot.com approvaltests.com