Our Philosophy Write readable code Care about the detail Make it - - PowerPoint PPT Presentation

▶

Jun 18, 2023 362 likes •617 views

Programming in the Small Ivan Moore & Mike Hill Our Philosophy Write readable code Care about the detail Make it routine Its important Explanation by Example Mini-series of programming episodes Interactive demo in

SLIDE 1

Programming in the Small

Ivan Moore & Mike Hill

SLIDE 2

Our Philosophy

Write readable code
Care about the detail
Make it routine
It’s important

SLIDE 3

Explanation by Example

Mini-series of programming episodes
Interactive demo in Java

SLIDE 4

1. “Where to Start?”

SLIDE 5

Pair up
Look at the 1st example, Checker.java
Read through the code, and think about what you’d like to

do to it...

Examples can be downloaded from http://www.exdriven.co.uk/pits/

SLIDE 6

Thoughts?

SLIDE 7

PITS Lessons (1)

Start with small improvements:
Convert comments into code
Fix the formatting
Remove unnecessary code (use the IDE

to warn you about this)

SLIDE 8

2. “When to Stop!”

SLIDE 9

Pair up
Look at the 2nd example, Args.java
If you owned this code, what would you do to it?

Examples can be downloaded from http://www.exdriven.co.uk/pits/

SLIDE 10

Thoughts?

SLIDE 11

PITS Lessons (2)

Attempt to remove all duplication - even if

small

Multiple exits can improve readability

(breaking structured programming rules)

Make declarations as local as possible

SLIDE 12

3. “Don’t stop now!”

SLIDE 13

Pair up
Look at the 3rd example, BusinessDay.java
Does this look ok to you?

Examples can be downloaded from http://www.exdriven.co.uk/pits/

SLIDE 14

Thoughts?

SLIDE 15

PITS Lessons (3)

Simplify your conditionals
Removing duplication sometimes requires

the creation of tiny function/policy objects

SLIDE 16

Extra PITS

Be discreet - keep your privates private
Avoid statics and NoJos in favour of objects

with behaviour

Hide your primitives inside domain objects

SLIDE 17

Recap...

SLIDE 18

Recap...

★Don’t write pointless comments

SLIDE 19

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care

SLIDE 20

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care ★Turn up your warnings and delete more code

SLIDE 21

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care ★Turn up your warnings and delete more code ★Remove the little bits of duplication

SLIDE 22

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care ★Turn up your warnings and delete more code ★Remove the little bits of duplication ★Break stupid structured programming rules

SLIDE 23

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care ★Turn up your warnings and delete more code ★Remove the little bits of duplication ★Break stupid structured programming rules ★Keep your scoping local and private

SLIDE 24

Recap...

★Don’t write pointless comments ★Fix your formatting - show that you care ★Turn up your warnings and delete more code ★Remove the little bits of duplication ★Break stupid structured programming rules ★Keep your scoping local and private ★Write domain objects with behaviour

SLIDE 25

It’s the PITS!

Ivan’s blog :: http://puttingtheteaintoteam.blogspot.com/ PITS articles :: http://ivan.truemesh.com/archives/cat_programming_in_the_small.htm Contact us :: mike@exdriven.co.uk and ivan@teamoptimization.com