Joe likes to think about how and why he does things, he doesn't always understand what he's doing, but he's good at looking competent. Come to ScotRUG to hear about what Joe learned over the last 6 months about SOLID, Git, regex and tooling choice while moving from looking competent to finally getting it.
An impact map is a visulation of scope and underlying assumptions, created collaboratively by senior technical and business people. Ot is a mind map grown during a discussion facillitated by answering the following four questions: Why? Who? How? What?
What are we trying to achieve? Usually defined in vague terms. Knowing why allows you to make good decisions around cost, scope & timelines, both at the start and when things change.
People (example in military) need to know the objective of any activity to react correctly to unforseen problems (which are a fact of life).
http://confreaks.com/videos/240-goruco2009-solid-object-oriented-design
Univerities like Enterprises but without the standards! Workes on long lived apps, not large data/users.
Your application will change. What will happen? That depends on it's design.
http://confreaks.com/videos/185-rubyconf2009-solid-ruby
How do you recognise a good design? Use telephone interview question. (picture of a tap near a plug socket) Buring of London - recreation was agile. Through out designs by Wren and built incrementally.
SOLID. Bob wanted priciples for design. So we can objectively judge code. All about dependencies. To build maintainable code you have to manage dependencies. Engine doesn't know about a Car. Car depends on Vehicle though inheritance.
| Not "Have to present" -> "Get to present" | |
| No reporting, no informating | |
| resonating influencing | |
| "How do people respond to your presentations?" (walk out, ask too many follow up questions, what actions do they take) | |
| "there is nothing normal about presenting" | |
| Prioritize the content | |
| Judge the audience by: "where do they spend their time, energy and money" | |
| When mixed audience: |
| http://vimeo.com/53154358 | |
| Google Protobuffs for exchanging data | |
| Design SOA around biz capabilites, not technical | |
| Postel's Law: Be conservative in what you send, and liberal in what to expect | |
| -- Don't use JAXB, use XPATH. | |
| Consumer Driven Contracts: Write a test to give to services that say what you use | |
| DO NOT USE SESSION STATE. USe cookies or persist. Or use another service | |
| Database: Use separate schema. Can still be in the same database instance. | |
| Services should own their own data. Free to store it how they want. |
| Ardbeg: 10 (WA: 93, MM: 91, MJ: 85, CO: 83) | |
| N: Sweet, soft peat, carbolic soap, arbroath smokies. Smoke & tar, lemon. | |
| P: Burning peat, dried fruit, sweet malt, liquorice. Coating, honeyed fire peat, balanced. | |
| F: Long, smoky, balanced cereal sweet and dry peat. | |
| Caol Ila: 12 (WA: 89, MM: 91, MJ: 77, CO: 85) | |
| N: Iodine, fish, bacon, floral. bbq fish, seaweed. | |
| P: Smoke, malt, lemon & peat, oily. Bacon fat, lemon, sweet smoke. | |
| F: Peppery peat, dry. Seaside bbq finish. | |
| Kilchoman: Machir Bay (WA: 92, CO: 84) | |
| N: Sweet smoke, buttery fish, toasted oats, berries. Peat & sweet toffee |
| grid = [ | |
| [nil,3,8, nil,nil,nil, 7,9,1 ], | |
| [2,nil,nil, nil,nil,nil, 4,nil,6 ], | |
| [nil,nil,nil, nil,6 ,9 , nil,8,nil ], | |
| [nil,nil,nil, 9,1,nil, nil,5,nil ], | |
| [9,nil,nil, nil,nil,nil, nil,nil,7 ], | |
| [nil,5,nil, nil,8,4, nil,nil,nil], | |
| [nil,6,nil, 8,9,nil, nil,nil,nil], |
| Topics: | |
| Stike action | |
| Metrics | |
| Physcial vs Electronic boards (moved 7 feet) | |
| Digital by Default (systems thinking) | |
| Shifting bottlnecks (Dev, Design, Test, BA) | |
| Feature planning | |
| DevOps | |
| What's a Goal | |
| Matrix Organisations |
| class Calculator | |
| def calculate(expresion) | |
| return 0 if expresion.split.size != 3 | |
| parts = expresion.split | |
| parts[0].to_i.send(parts[1], parts[2].to_i) | |
| end | |
| end | |
| describe Calculator do | |
| let(:calculator) { Calculator.new} |