Differences Between Properties and Variables
A variable always has a location in memory.
You make a variable with one declaration statement.
You make a local variable in a procedure, and it is available only in that procedure.
You make a member variable (also known as a field) in a module,
A property is a data element that you make in one of the containers
You make a property with a code block between the clauses
The code block contains procedures:
Set, or the two together.
These procedures are known as property procedures or property accessors.
They not only return and store a property's value, but can also do other operations.
|Quality||Variable||One-line property||Block property|
|Declaration||One declaration statement||One declaration statement||Sequence of statements in a code block|
|Implementation||One location in memory||One location in memory||Executable code.|
|Storage||Directly related to its value||Directly related to its value||By default, has storage local to the property.|
|Executable code||None||None||One or two procedures|
|Read and write access||Read/write or read-only||Read/write||Read/write, read-only, or write-only|
|Special operations (more than a result or a changed value)||Not possible||Not possible||Possible with |