July 2016
Beginner to intermediate
776 pages
17h 26m
Korean
Content preview from 프로그래밍 스칼라: 실용적인 스칼라 활용법을 익히는 가장 확실한 실전 바이블 (2.11.x 버전 기반)
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415
9
장
트레이트
//
new Button
("
Click Me
!")
with ObservableClicks with VetoableClicks
def VetoableClicks
.
click
()
=
{
if
(
count
<
maxAllowed
)
{
//
super
.
click
=
>
ObservableClicks
.
click
count
+
=
1
{
{
updateUI
()
//
super
.
click
=
>
Clickable
.
click
}
notifyObservers
(
this
)
}
}
}
ObservableClicks
가 선언의 맨 끝에 있을 때(첫 번째 경우), 실제
Clickable
.
click
은 여전
히 거부 가능하지만, 관찰자는 모든 눌림을 통지받는다. 눌림이 거부되지 않은 경우에만 관찰자
가 통지를 받아야 한다고 생각한다면, 이를 버그로 간주할 수 있다.
VetoableClicks
가 선언의 맨 끝에 있을 때 (두 번째 경우 ), 거부를 처리하는 논리가 다른 모든
click
메서드를 둘러싼다. 따라서
updateUI
와
notifyObservers
는 모두 눌림이 거부되지 않
은 경우에만 호출된다.
선형화
linearization
라는 알고리즘을 사용해서 구체적 클래스의 상속 계층에 있는 트레이트나 클래
스의 우선순위를 해결한다. 여기 있는 두
button
은 모두 우선순위를
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.