$STATIC: Difference between revisions

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{{Cl|REDIM}} array(2 * size)
{{Cl|REDIM}} array(2 * size)


{{Cl|PRINT}} {{Cl|UBOUND}}(array)  
{{Cl|PRINT}} {{Cl|UBOUND}}(array)
{{CodeEnd}}
{{CodeEnd}}
: ''Note:'' [[DIM]] using a literal numerical size will create a Duplicate definition error.
: ''Note:'' [[DIM]] using a literal numerical size will create a Duplicate definition error.

Revision as of 16:51, 22 January 2023

The $STATIC metacommand allows the creation of static (unresizable) arrays.


Syntax

{REM | ' } $STATIC


Description

  • QBasic Metacommands require a REM or apostrophy (') before them and are normally placed at the start of the main module.
  • Static arrays cannot be resized. If a variable is used to size any array, it becomes $DYNAMIC.
  • A REDIM statement has no effect on $STATIC arrays except perhaps a duplicate definition error at the REDIM statement.
  • The array's type cannot be changed once DIM and a literal value sets the dimensions and element size.
  • $STATIC defined program arrays cannot be re-sized or use _PRESERVE.


Examples

Example: When a variable is used, the array can be resized despite $STATIC. The array becomes $DYNAMIC.

'$STATIC

INPUT "Enter array size: ", size
DIM array(size)   'using an actual number instead of the variable will create an error!

REDIM array(2 * size)

PRINT UBOUND(array)
Note: DIM using a literal numerical size will create a Duplicate definition error.


See also



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