Learning Swift from scratch (day 13)--Integer and floating point type for data types

Original articles, welcome reprint. Reprint Please specify: Dongsheng's Blog

Swift provide 8 , - , + , - a signed and unsigned integer in bit form. These integer types follow the naming conventions of the C language, and I summarize the integral types in Swift :

650) this.width=650; "Width=" 550 "height=" "title=," image1.jpg "style=" width:550px;height:125px; "alt=" Wkiom1buc9qyzwb7aadsrr53mnu783.jpg "src=" http://s4.51cto.com/wyfs02/M01/7C/A2/ Wkiom1buc9qyzwb7aadsrr53mnu783.jpg "border=" 0 "vspace=" 0 "hspace=" 0 "/>

650) this.width=650; "Width=" 550 "height=" 127 "title=" image2.jpg "style=" WIDTH:550PX;HEIGHT:127PX; "alt=" wKiom1bUC__ Sneeiaad2-ltecde595.jpg "src=" http://s5.51cto.com/wyfs02/M00/7C/A2/wKiom1bUC__SNeEiAAD2-LteCdE595.jpg "border=" 0 "vspace=" 0 "hspace=" 0 "/>

Example of an integral type:

Print ("UInt8 range: \ (uint8.min) ~ \ (Uint8.max)") Print ("Int8 range: \ (int8.min) ~ \ (Int8.max)") Print ("UINT range: \ (UINT . min) ~ \ (Uint.max)) print ("UInt64 range: \ (uint64.min) ~ \ (Uint64.max)") Print ("Int64 range: \ (int64.min) ~ \ (Int64.max) ") Print (" Int range: \ (int.min) ~ \ (Int.max) ")

The output results are as follows:

UInt8 range:0 ~ 255

Int8 Range: 128 ~ 127

UInt range:0 ~18446744073709551615

UInt64 range:0 ~18446744073709551615

Int64 range:-9223372036854775808 ~ 9223372036854775807

Int range:-9223372036854775808 ~ 9223372036854775807

The above code is through an integer min and the Max Property calculates the range of each type.

floating-point types are primarily used to store decimal values, and can be used to store large integers. It is divided into floating-point (float) and double-precision floating-point (double), double-precision floating-point numbers use more memory space than floating-point number, can represent the range of values and precision is also relatively large.

650) this.width=650; "Width=" 550 "height=" + "title=" image3.jpg "style=" width:550px;height:71px; "alt=" WKioL1bUDKrw_ Nudaacvmm1lzkk201.jpg "src=" http://s3.51cto.com/wyfs02/M01/7C/A0/wKioL1bUDKrw_NuDAACVMm1Lzkk201.jpg "border=" 0 " Vspace= "0" hspace= "0"/>

Welcome to follow Dongsheng Sina Weibo@tony_Dongsheng.
Learn about the latest technical articles, books, tutorials and information on the public platform of the smart Jie classroom
650) this.width=650; "title=" 00.png "alt=" Wkiol1budmeypskcaaas2mbeznc891.png "src=" http://s2.51cto.com/wyfs02/M02/ 7c/a0/wkiol1budmeypskcaaas2mbeznc891.png "/>
More ProductsIOS,Cocos, mobile Design course please pay attention to the official website of Chi Jie Classroom:http://www.zhijieketang.com
Smart-Jie Classroom Forum Website:http://51work6.com/forum.php

This article is from the "Dongsheng-ios Technical Consultant" blog, make sure to keep this source http://tonyguan.blog.51cto.com/701759/1746103

Learning Swift from scratch (day 13)--Integer and floating point type for data types