Variables In Objective-C

Last week we wrapped up our look at variables in Objective-C. Here's a quick overview of the posts:

Global variables:

• global variables
• the extern modifier

Static variables:

• static variables
• static variables in functions

Local variables:

• local variables and function parameters

Instance variables:

• instance variables
• getters and setters

Properties:

• @property and @synthesize
• synthesizing properties
• atomic and nonatomic properties
• changing the default property names
• writing a thread safe getter method

Strings is the next topic, which we start today.