[notes] some code tips

Prefer functionality over implementationIt’s never too late to refactorWatch out for repeated code across different typesOne protocol does not rule them allDifferentiate type constraints from parameter constraintsConform at the highest possible levelDesign with collections in mind

genericizing-code

原文链接: http://ericasadun.com/2015/07/31/genericizing-code/

Prefer functionality over implementation

 Focus your code on the connections between data creation and data consumption instead of the particulars of specific types.关注于数据创建和数据消费的关系

It’s never too late to refactor

Watch out for repeated code across different types

One protocol does not rule them all

Differentiate type constraints from parameter constraints

Conform at the highest possible level

Design with collections in mind