What is difference between properties and variable?

The following table shows some important differences between variables and properties….Differences.

Point of difference	Variable	Property
Declaration	Single declaration statement	Series of statements in a code block
Implementation	Single storage location	Executable code (property procedures)

What is the relation between iVar and property?

iVar is faster than property, as property will call the getter or setter functions. When you declare a property, the compiler will add getter and setter functions for the property.

What are the properties of variables?

Define Variable Properties is designed to assist you in the process of assigning attributes to variables, including creating descriptive value labels for categorical (nominal, ordinal) variables. Define Variable Properties: Scans the actual data values and lists all unique data values for each selected variable.

What is variable in math algebra?

Variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).

What is a protocol in Objective-C?

Objective-C allows you to define protocols, which declare the methods expected to be used for a particular situation. This chapter describes the syntax to define a formal protocol, and explains how to mark a class interface as conforming to a protocol, which means that the class must implement the required methods.

What is @synthesize Objective-C?

Default. By default, @synthesize generates a member variable with the same name as the target of the set/get. the instance variable will bear the same name as the property. In this example, the instance variable will also be called firstName, without an underscore.

What are the three properties of a variable?

Variable characteristics

The data type of the variable value, which indicates the kind of information a variable represents, such as number, string, or date.
The scope of the variable, which indicates where the information is available and how long the variable persists.

What’s the difference between a property and a variable?

Variables and properties both represent values that you can access. However, there are differences in storage and implementation. A variable corresponds directly to a memory location. You define a variable with a single declaration statement.

Which is the default property attribute in Objective C?

In objective c by default property attribute is atomic in atomic multiple threads are created for setting and getting the values for creating thread extra code will be generated and it leads to performance issue 2) Non-atomic: By using this attribute we tell the compiler that it doesn’t to generate extra code for thread creation.

What’s the difference between a property and a function?

Properties. A property is a data element defined on a module, class, or structure. You define a property with a code block between the Property and End Property statements. The code block contains a Get procedure, a Set procedure, or both. These procedures are called property procedures or property accessors.

What is the definition of a class in Objective C?

A class consists of state and behavior. The state is nothing but variable and behavior is functions or method. A class is a written h file the definition of h file is m file. The variable declared in a class can be accessed entire class function.

What is difference between properties and variable? The following table shows some important differences between variables and properties….Differences. Point of difference Variable Property Declaration Single declaration statement Series of statements in a code block Implementation Single storage location Executable code (property procedures) What is the relation between iVar and property? iVar is faster than property,…