iOS9 brings many new features to make our life easier development,Stack Views profile is a good example. Before you give a brief introduction of the auto layout. Let us work together in this example is simple, but,With your app UI becomes more complex,You will find all the iOS devices to provide the perfect interface constraints become more difficult. This is Apple's most[……]
Generics are another important object-oriented concepts in，In addition to multi-state，It further increases the range of reuse code，For Swift language,，Generics throughout its always。
We start from the first day of class in the use of this global function，It allows us to show the statement on the screen，Very simple to use，It can pass a string。
Incoming string displayed string[……]
This lesson we get to know about the Swift error handling
In calling the method and the time to write a wheel，There will always be wrong sorts of weird，Normal is already compiled software，Some unexpected errors also occur。but，Among these errors，There are some that can be identified and captured - they can be expected。
Why do we say that there are some errors that can be expected to get it? For example,[……]
we all know，The method is put in the running instance。That is the result of the implementation of the method is based on the instance property came，The property is an example of the current state of change - we call it "dynamic"。
But really all it is dynamic? In fact, not，Some methods give results which will directly and according to your call，It does not need to generate change according to the change instance attributes - that it is produced anyway[……]
In front of so many bedding，Now finally we want to address this thing the garbage collector。
This is not the Ark ...... This is automatic reference counting (Automatic Reference Counting)，This thing is used to manage Apple memory。
Its function is that the garbage collector on the garbage heap。It would not have been able to ensure that all heap objects that reside in the running to be released in the heap。Ensures that[……]
At the end of the previous lesson，We finally made clear the process of creating an object，Then，Speaking create an object looks like is to call a method，This method may in the end what is it?
Not wrong，When we initialize a class object when，We did call a method - initializer。
Initializer method is actually a special provision of the，It is possible for the class to initialize。
Let's imagine，[……]
It's time to look at the living space objects and methods - and want to learn object-oriented，I do not know where to put the methods and objects is a very embarrassing thing - after all, we still have to face the garbage collector，Want to make the garbage collector to help you do more，We have to understand its working mechanism to some extent，Learn how and where to store objects，if not，You have to write a program to the vulnerable!
Courses in front of us[……]
Last time we mentioned agreement，But we talk about it the way an application，This lesson we take a deeper look at this class and used up almost exactly what profound esoteric protocol。
Now，We again review the shameful inheritance tree once：
Here we wrote a weapon ...... is used for attack and defense。Then，As a game，Model weapons can not just only in one place[……]
Rewriting said method，We come back to look at the inheritance tree：
This should look okay，We can create an instance of the sword，Create an instance of a pistol ......
But if I have to write it?
|
1 |
var 武器 = 武器() |
So the question is：excavator……
Do not，Our problem is "weapon" in the end is what?[……]
Said so many times rewriting，This time we have to rewrite treat seriously what method。
We say，Inheritance is the equivalent of signing a contract，We inherited out of the subclass must comply with this contract，So even if you want to do something where no contract，Must comply with contract specifications，so，You override methods，It must also comply with the type of process。
We talked about the type of approach，It ()->() Such[……]
We finished the last lesson inheritance，That this lesson we will continue in-depth，What to look at inheritance tree is big move。
You and I could talk about this polymorphic pronunciation，Your first thought should be a high school biology talked of "polypeptide"；Ok，The only possibility is to pronounce the same between the two。
We say that to achieve the extraordinary significance of inherited，It greatly reduces the number of redundant lines in our code，Reducing the difficulty of maintaining the code ......[……]
Last time we specifically about the inheritance mechanism，And also designed an inheritance tree，So the question is：I'm not going to ask Excavator strong Which? I want to ask how to determine whether a class is a subclass of another class do? How do we design a class instead of a class of attributes?
Here we will use such a method to examine the relationship between the two of them：
we say，Pistol firearms --O[……]
This time we take a look at a few lessons in succession before mentioned，We had初见 OPEN In a development with a mobile phone (system) to describe inherited this thing chestnuts，I believe we have the impression。
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
class CellPhone { func call() { print("Call someone!") } func powerUp () { print("Welcome!") } func powerDown() { print("Goodbye~") } func sendMessage() { print("sent a Message!") } } |
So this lesson we will learn to understand the depth of the concept of inheritance。
This is actually not difficult to understand，You see，when[……]
This lesson we try to develop a simple command-line games，To complete the experience a so-called "development process"。
This is a board game，We guess the location of enemy ships，As long as the number of hits you can send them to sink。
We give these ships the label affixed to point it ...... such a variety of sites?so，This has become a site of attack Behind his program ......。
We want players to[……]
Before we in class，Take a look at the previously mentioned "SoC" concept，We say this is called "Separation of Concerns"，I translate it as separation of duties - the different sections that focus on their part。Or a target to achieve a goal。
The goal not only to make the code more modular and easier to maintain，Also let the system run more efficiently。So，We want Object[……]
We use var to declare a variable，Congguizili like a tube placed in the experimental stage；
We give a specified variable type，Just like in the test tube labeled the；
Then put reagents must be marked on the label - otherwise could cause an explosion or poisoning。
Same，If we try to give a reservoir into a wrong data type，Then the compiler[……]
A lesson on our first taste OOP Style，Ambiguous classes and objects in exactly what is it? This lesson we use a simple little chestnut to introduce to you。
We say that the relationship between classes and objects and the relationship between the design of products，Take Our house is，Certainly there will be a corresponding building design，But the design will not only correspond to a building，At least one cell must be met with a design is not it? our[……]
Some students did not take into account the iPhone，Swift language learning but at least we will have OS X operating system，Our code shows will be completed in OS X，Using the CLI interface。So although it looks old and was，But believe me take the GUI make you worry a lot - because that is another matter。
We take a look，With O[……]
Haha! And we met again，The ten milk to give us a newProgramming Course！
This is the syllabus before programming methodology，I was very glad to do so a decision to throw in outline here：) Although the end of the course，But a separate reading this outline is a good choice，I will go back based on this update it，To accommodate the new live version of the programming methodology -
The courses weAlreadyWith Karel[……]