Swift 2.0 Study Notes (Day 9)--Leave expression you try!

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Expression AH is very important.

in Swift, there are 3 forms of expressions.

• Do not specify a data type

var A1 = 10

• Specifying data types

var a1:int = Ten

• Using semicolons

var a1:int = 10; var a2:int = 20

In the swift language, a semicolon can be added without a semicolon at the end of a statement, but there is a case where a semicolon is required, that is, when multiple statements are written in one line, a semicolon is used to differentiate the statement.

For example:

var a1:int = 10; var a2:int = 20;

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Swift 2.0 Study Notes (Day 9)--Leave expression you try!