import java.time.*; public class MyTest{ public static void main(String[] args){ LocalDate date = LocalDate.now(); int month = date.getMonthValue(); int today = date.getDayOfMonth(); date = date.minusDays(today - 1); DayOfWeek weekday = date.getDayOf…
Swift’s API includes many functions and instance methods that reflect its functional programming heritage. A prime example is called reduce. You can reduce a collection of values down to just one value, such as calculating the sum of every person’s…
The official raywenderlich.com Objective-C style guide. This style guide outlines the coding conventions for raywenderlich.com. Introduction The reason we made this style guide was so that we could keep the code in our books, tutorials, and start…
[Accessor Search Implementation Details] Key-value coding attempts to use accessor methods to get and set values, before resorting to directly accessing the instance variable. Key-value coding 优先使用accessor methods走获取与设置数据,之后再使直接访问instance variable. […
KVC(Key Value Coding) KVO(Key Value Observing) KVB(Key Value Binding) KVO是Cocoa的一个重要机制,他提供了观察某一属性变化的方法,极大的简化了代码.这种观察-被观察模型适用于这样的情况,比方说根据A(数 据类)的某个属性值变化,B(view类)中的某个属性做出相应变化.对于推崇MVC的cocoa而言,kvo应用的地方非常广泛.(这样的机制听起来类 似Notification,但是notification是需要一个发送no…
Principle To offer the benefits of encapsulation you should always expose private field with public accessor method. Correct Implementation // Encapsulation of data by accessor methods and mutators class Point { private double x; private double y; pu…
iOS 部分问题总结(二) - 苹果审核篇 1. 记录下5.1新规后上传被拒的问题排查和解决过程. 几天前,最新一次的更新被拒了,提示Invaild Binary.好在苹果同时发来了说明邮件做了详细说明: Dear developer, We have discovered one or more issues with your recent delivery for "Conquer Online". To process your delivery, the following…
OpenXC : Any updates on plans for IOS? Hi Thomas, We're actively investigating this as we'd love to able to support all platforms, but I can't say for sure what will be possible or when yet. Actually, this would be a great place for some help and adv…
The official raywenderlich.com Objective-C style guide. This style guide outlines the coding conventions for raywenderlich.com. Introduction The reason we made this style guide was so that we could keep the code in our books, tutorials, and starter k…
