宋奕Ekis

Extensions add new functionality to an existing class, structure, enumeration, or proto...

宋奕Ekis

We can define some types within other types, just like this: this is called Nested Type...

宋奕Ekis

Checking Type We use is keyword to check if an instance is a specific class. Downcastin...

宋奕Ekis

Defining and Calling Asynchronous Functions We use async keyword in place of before ret...

宋奕Ekis

Representing and Throwing Errors We can use enumeration to conform Error protocol to im...

宋奕Ekis

Calling Methods Through Optional Chaining In the example above, printNumberOfRooms() is...

宋奕Ekis

Overriding Overriding Property Getters and Setters We can present an inherited read-onl...

宋奕Ekis

Subscripts can be defined in Classes, Stuctures and Enmuerations. We can look at it as ...

宋奕Ekis

Like OC, we can make instance methods and type methods(like class methods in OC). And t...

宋奕Ekis

Computed properties are provided by classes, structures, and enumerations. Stored prope...

宋奕Ekis

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呼吸--特德·姜

除了大刘之外，我最喜欢的科幻小说家 — — 特德·姜，和我一样，选择了计算机专业。 我相信更是由于此专业，他在被系统的培养过，或者说被潜移默化的影响过之后，产生了如此系统性和...

宋奕Ekis

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宋奕Ekis

Comparing Structures and Classes Memberwise Initializers for Structure Types The struct...

宋奕Ekis

Enumeration Syntax The name of enumeration starts with a capital letter, and use singul...

宋奕Ekis

Closure Expressions The Sorted Method the above example shows that we use a backwardfun...