Swift arrays are used with dictionary type operations

var studentlist: [String] = [" Zhang San "," John Doe ", " Harry "];

// array insertion

studentlist. Insert (" Liu Bei ", Atindex: 0)

// array append, only one element can be appended per call

Studentlist. Append (" Zhao Yun ");

// array append multi-element

Studentlist + = [" Guan Yu "," Zhang Fei "];

// array traversal

for student in studentlist {

Print (student);

}

Printing results:

Liu bei

Tom

John doe

Harry

Zhao Yun

Guan yu

Zhang Fei

// dictionary type if you take a type example from Java , similar to Map

var studentdictionary: dictionary <, string > = [102 : " Zhang San ", 105 : " John Doe , 109 : " Harry ]

Print (" dictionary traversal Keys");

for StudentID inch studentdictionary. Keys {

Print (" student ID: \(studentid)");

}

Print (" dictionary traversal Values");

for Studentname inch studentdictionary. Values {

Print (" student name :\(studentname)")

}

Print (" dictionary traversal key-value pair form ");

for (StudentID, Studentname) inch studentdictionary {

Print (" student ID:\(studentid) student name :\(studentname )")

}

The traversal of String type is not supported in this way after the current xcode7, if using xcode6.2 can be compiled by

var str: String = "10.9989";

for number in str {

}

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Swift arrays are used with dictionary type operations