//: Playground - noun: a place where people can playimport UIKit// 对区间进行判断var score = 90switch score {case 0: print("You got an egg!")case 1..是介绍运算...
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编程语言 时间:
2015-12-16 17:11:15
阅读次数:
162
算法描述:Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space ...
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编程语言 时间:
2015-12-16 15:21:00
阅读次数:
168
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"let orangeAreYellowColor = truelet appleIsBlue = falseif ...
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编程语言 时间:
2015-12-16 12:33:38
阅读次数:
137
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"// 数值类型转换let three = 3let PI = Double(three) + 0.1415926 ...
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编程语言 时间:
2015-12-16 12:27:15
阅读次数:
148
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"// nil的聚合运算可以说是为了可选值而出的 // 它的体现是"??"// eg:// a ?? b -> ....
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编程语言 时间:
2015-12-16 12:25:25
阅读次数:
154
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"var a = 1, b = 10// a到b(包含a,b) [a,b]a...b// a到b-1(包含a,不包含...
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编程语言 时间:
2015-12-16 12:21:53
阅读次数:
169
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"// 断言, 必须符合某个条件,程序才能继续运行下去// 可以看做是一个底线要求var age = 19;asse...
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编程语言 时间:
2015-12-16 12:16:24
阅读次数:
184
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"// 常量的定义用letlet maxLoginCount = 10// 变量的定义用varvar current...
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编程语言 时间:
2015-12-16 12:12:01
阅读次数:
192
//: Playground - noun: a place where people can playimport UIKit// 元组就是将多个不同的值集合成一个数据/* 元组是Objective-C中没有的数据类型,与数组类似,都是表示一组数据的集合,但与数组不同,它的特点是: 特点: 1.可...
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编程语言 时间:
2015-12-16 12:08:22
阅读次数:
214
//: Playground - noun: a place where people can playimport UIKitvar str = "Hello, playground"let MAXVALUEOFUINT8 = UInt8.maxlet MINVALUEOFUINT8 = UInt...
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编程语言 时间:
2015-12-16 12:02:17
阅读次数:
149