Semicolons are optional in Swift. They are only required if you want to combine multiple statements on a single line. Do not write multiple statements on a single line separated with semicolons.
Here is an example of a valid Swift program that does not use semicolons:
var myString = "Hello, world!"
print(myString)
Here is an example of an invalid Swift program that uses semicolons to separate multiple statements on a single line:
var myString = "Hello, world!"; print(myString);
The compiler will complain about syntax errors if you try to run this program.
In general, it is best to avoid using semicolons in Swift. They can make your code more difficult to read and understand. If you do need to use semicolons, be sure to use them correctly.
Here are some additional things to keep in mind about semicolons in Swift:
- Semicolons are not required after control flow statements, such as if, for, and while.
- Semicolons are not required after function calls.
- Semicolons are not required after expressions that are used as statements, such as return and break.
If you are unsure whether or not you need to use a semicolon, it is always best to err on the side of caution and use one.
