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IT293 Unit 3 Glossary of Terms
Terms for Unit 3- IT293
10
Computer Science
Undergraduate 2
08/21/2010

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Term
Sub Procedure
Definition
Performs one or more related tasks.
Term
Call statement
Definition
The statement that invokes a Sub procedure.
Term
ByVal parameter
Definition
When a variable argument is passed to one of these, just the value of the argument is passed.
Term
ByRef parameter
Definition
When a variable argument is passed to this, the parameter is given the same memory location as the argument.
Term
Variable Lifetime
Definition
Period during which it remains in memory.
Term
Variable Scope
Definition
In Sub procedures, defined same as in event procedures.
Term
Function procedures (aka user-defined functions)
Definition
Always return one value.
Term
Parameters Variables
Definition
Appearing in the top line of the function procedure.
Term
Return expression
Definition
The value returned by a function.
Term
Named constants
Definition
A special constant whose value does not change during the program execution.
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