global variable concept from the Object Oriented Software Engineering knowledge base

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global variable

subject fact

global variable causes common coupling 2001-08-30 14:55:43.0
has definition A variable that is accessible from all procedures in the system, or in the scope of just a specific set of modules (e.g. a Java package).
is a subtopic of 9.2 - Principles Leading to Good Design
is a kind of variable
were commonly used in older programming languages 2001-08-30 14:55:43.0

variable can contain different classes of objects depending on the type of the variable 2001-08-30 14:58:18.0
can refer to a particular object, several different objects during the execution of a program, or no object at all
has scope
has type 2001-08-30 14:58:19.0
should have comment if it is non-obvious

global variable	causes common coupling
	has definition A variable that is accessible from all procedures in the system, or in the scope of just a specific set of modules (e.g. a Java package).
	is a subtopic of 9.2 - Principles Leading to Good Design
	is a kind of variable
	were commonly used in older programming languages
variable	can contain different classes of objects depending on the type of the variable
	can refer to a particular object, several different objects during the execution of a program, or no object at all
	has scope
	has type
	should have comment if it is non-obvious