Re-use in OO: Inheritance, Composition and Mixins
Over the past several months, the Rails community, at least to my eyes, has become increasingly concerned with managing the complexity that appears when following the “fat model, skinny controller” advice prescribed by many Rails experts. The real issue, however, is reusability. How can logic be easily used in two places? In your average object-oriented language, there are four primary ways to acc
A world without nil
Previously, we saw how just using functions in Ruby, we could create a lot of powerful code. Let’s continue the theme of “programming with constraints” and try to solve an actual problem. nil. Is nil a problem? nil creates problems in code clarity and revealing programmer intent. nil means “no value” sometimes, but other times it means false. Other times it means “the developer didn’t think of the
Adventures in functional programming with Ruby
The following is an aimless journey through a degenerate form of Ruby, in an effort to learn a bit more about functional programming, simplicity, and API design. Suppose that the only way we have to organize code in Ruby is to make lambdas, and the only way we have to structure data are arrays: square = ->(x) { x * x } square.(4) # => 16 person = ["Dave",:male] print_person = ->((name,gender)) { p
1
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
