Swift

In the blink of an eye, Swift is already one year old, this fresh, grammatical fashion, type security, execution speed of the language has gradually deepened the hearts of the vast number of developers. I am also very fond of this new programming

Ready to use Swift to make a project, use this style. Sleep well at night. Dark Circles (--)See details please visit my Githubhttps://github.com/zhangjingwang1993/swiftappYou can also order a star and give an encouragement.SWIFT/OC Advanced AC Group:

 Learn Swift First step print Hello worldPrint ("Hello World") Swift is not semicolon-delimitedWhat is a constant?Constants are the amount of values that cannot be changed during a program's operationwhat time variable?Variables are the amount of

A function is a collection of statements organized together to perform a specific task.Swift functions are similar to simple C functions and complex Objective C language functions. It enables us to call internal local and global parameter values

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogPassing references to parametersA class is a reference type, and other data types such as Integer, float, Boolean, character, string, tuple, collection, enumeration, and

1. Functions1.1 Func Funcnmae () {} This defines a function whose arguments are null, the return value is NULL, and if the parameters and return values are written directly in two brackets.The 1.2 parameter needs to indicate the type, and if no

Exceptions (Exception) and errors (error).In OBJECTIVE-C development, an exception is often caused by a programmer's error, such as when we send this message to an object that cannot respond to a message NSObject  , get NSInvalidArgumentException 

Some of the tips in the documentation can help improve the quality of your Swift program, making your code less error-prone and more readable. Explicitly marking the final class and class protocol is two obvious examples. However, there are some

There are 4 ways to handle errors in 1.Swift. You can pass the error that the function throws to the code that called the function, handle the error with the do-catch statement, treat the error as an optional type, or assert that the error does not

A recent iOS project that requires a date based on a date represents the day of the week and the date is obtained as a string, so the method can be simply described as follows:/** returns a date based on a date format string * Parameters: DateTime,

Original blog, reproduced please indicate the sourceStringIn Swfit, string is Unicode-compatible. The usage is similar to the C language.AttentionIn cocoa and cocoa touch, Swift's string, and NSString in the foundation are compatible, and all

Corelocation is a framework that provides device positioning in iOS. This framework allows for location processing to obtain positional data, such as longitude, latitude, elevation information, and so on.1, positioning accuracy Settings Location

Swift has been out for a long time, has not started the study, now began to decide the system of learning.The beginning of learning in any language is grammar: 1. Note: Let is modified to be immutable var is variable let maximumnumberofloginattempts

1.0 value types and reference types are divided in SwiftInt, String, struct, and enum all belong to a value type, passing a value type to the method, creating a copy of it in memory and passing the copy, so that we can modify it as we want, without

This code snippet is the one I've been looking for all over the internet this week, and after my own modifications, I finally got the navigation up and down.Step1:==> because this search has to be animated, this page must have a navigation

A day of learning swift, and after it was mixed with OC, I suddenly felt the language was fine.The following is a brief talk about its pointers1. Create a swift or OC project: I am here to create the Swift language project, project name Swifttest2,

1 Import Foundation2 //the Order of the dictionary elements is unordered3 //1. The dictionary element is a key-value pair (Key:value)4 //key must be a hash string\int\bool5 vardic1=["name":"LSQ"]6println (dic1["name"])7 //the complete definition

Save user information (saved in sandbox)-(void) Saveuserinfo {Nsuserdefaults *defaults = [Nsuserdefaults Standarduserdefaults];//IOS 8.0 will be written directly to the sandbox, no need to use ' [defaults synchronize]; ' [Defaults setobject:1.

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogReturns a value of 3 forms: no return value, single return value, and multiple return value.No return value functionThe so-called no return result is, in fact, a void type,

1.Objectice-c Code:1Nsshadow *shadow = [NsshadowNew];2 3[Shadow Setshadowcolor:[uicolor colorwithred:1.0Green1.0Blue1.0Alpha1.0]];4 5[Shadow Setshadowoffset:cgsizemake (0,1)];6 7Nsdictionary *attributes = @{8 9Nsforegroundcolorattributename: