Swift

S-- The Swift learning content is based on the content of the following URL　　Https://developer.apple.com/library/ios/referencelibrary/GettingStarted/DevelopiOSAppsSwift/index.html#//apple _ref/doc/uid/tp40015214　In this course, you will step into

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog Swift A dictionary represents a very complex collection that allows the element to be accessed by a key. A dictionary is a set of two parts, one is a set of key (key),

Get the namespace before you use the classUsing JSON to get the class name of the character type and then create the class object, it is necessary to use the character to turn classGets the namespace from the info dictionary to the character typeLet

Swift language: Simple and efficient, code style is similar to scripting language, do not need to write after each sentence (;), function method return to the style of C, with Java generally no longer required. h and. m two files, but one. Swift's

Original articles, welcome reprint. Reprint Please specify: Dongsheng's Blogcorresponding variable strings can be inserted, deleted, and replaced, String Several methods are available to help implement these operations. These methods are as

Given binary trees, write a function to check if they is equal or not.The binary trees is considered equal if they is structurally identical and the nodes has the same value.Train of thought: just learned two fork tree, thought may want to separate

guardStatements and if statements are a bit similar in that they determine what to do next, based on the Boolean value of the expression following its keyword. But unlike if statements, guard statements have only one block of code, unlike statements

In programming, we often put a set of code that can accomplish a particular function, and the name tag type is called a function, in C we know that the function name is a pointer to the address of the first line of code in the Body code area of the

Add content to TextContainerOpen Main.storyboard , drag and drop two Label components from the component library (Object Library) into TextContainer, where they can be placed:Select the top label, then click the Align button at the bottom, add a

17 optional chainAn optional chain (Optional Chaining) is a process that can request and invoke properties, methods, and sub-scripts, and its self-judgment is that the target of a request or call may currently be empty (nil). If the self-judged

classBase {varbase_x =0 Static varBase_y =1FinalvarBase_z = Afunc baseinc () {base_x+=1 } classfunc Basemuti () {base_y-=1 }}classParent {func parentinc () {print ("Parnetinc") }}classChild:base {//attributes are also added override

Original articles, welcome reprint. Reprint Please specify: Dongsheng's Blogwhen I first saw the following code, I petrified, what is the code? The words spelled out?  Import Foundation            var str = "HelloWorld"         print (str)          

Original articles, welcome reprint. Reprint Please specify: Dongsheng's Blog Read the previous study notes.What is a keyword, you are now prompted toSwift 2.0then adddefer,Guard,Repeat,Catch,rethrows,Throw,throwsand theTrykeyword, whereRepeatkeyword

Import Uikit@uiapplicationmainclassAppdelegate:uiresponder, uiapplicationdelegate {var window:uiwindow?func Application (application:uiapplication, didfinishlaunchingwithoptions launchoptions: [nsobject:anyobject]?) -Bool {Self.window=UIWindow

Import Uikit@uiapplicationmainclassAppdelegate:uiresponder, uiapplicationdelegate {var window:uiwindow?func Application (application:uiapplication, didfinishlaunchingwithoptions launchoptions: [nsobject:anyobject]?) -Bool {Self.window=UIWindow

Import Uikit@uiapplicationmainclassAppdelegate:uiresponder, uiapplicationdelegate {var window:uiwindow?func Application (application:uiapplication, didfinishlaunchingwithoptions launchoptions: [nsobject:anyobject]?) -Bool {Self.window=UIWindow

Using these days of free time to learn some swift basic grammar, feel very good, and OC have similar places, there are different. The following are the main differences:The connection between Swfit and OCA semicolon is not required at the end of a 1.

The first thing to understand is the general constant parameter: A parameter in a function that cannot be operated within a function is a constant parameter. Apple declares a function, and the default behavior for a parameter is that this parameter

University, there is a "modern algebra" Professor, he never read textbooks in class, and do not follow the textbook to explain the course, but he speaks more than the book Deep image (humor, eloquence), there is a level of sense, in addition to

1let coordinate = (1,1)2 Switchcoordinate3 {4 Case(0,0):5Print"It ' s origin!")6 Case(_,0):7Print"(\ (coordinate.0), 0) is on the x-axis")8 Case(0,_):9Print"\ (coordinate.1) in on the y-axis")Ten default: OnePrint"\ (coordinate.0), \ (COORDINATE.1