108 Quotes by Robert C. Martin

... creative output depends on creative input.

Os padrôes facilitam a reutilização de ideias e compomentes, recrutam pessoas com experiência considerável, encapsulam boas ideis e conectam os compomentes. Entretanto, o processo de criação de padôes pode, ás vezes, ser muito longo para que o mercado fique á espera deles, e alguns padrôes acabam se desviando das necessidades reais das pessoas a quem eles pretendem servir.

It is not enough for code to work.

Programming is a social activity.

Software has two types of value: the value of its behavior and the value of its structure. The second of these is the greater of the two because it is this value that makes software soft.

The component structure cannot be designed from the top down. It is not one of the first things about the system that is designed, but rather evolves as the system grows and changes.

What would happen if you allowed a bug to slip through a module, and it costyour company $10,000? The nonprofessional would shrug his shoulders, say“stuff happens,” and start writing the next module. The professional wouldwrite the company a check for $10,000!

Procedural code (code using data structures) makes it easy to add new functions without changing the existing data structures. OO code, on the other hand, makes it easy to add new classes without changing existing functions.

The complement is also true: Procedural code makes it hard to add new data structures because all the functions must change. OO code makes it hard to add new functions because all the classes must change.