__FB_UNIQUEID__
Intrinsic define (macro) performed by the compiler.
Syntax
`
__FB_UNIQUEID__( stack-id )
`
Parameters
`stack-id`
the name of the stack to access
Description
Gets the identifier at the top of stack identified by `stack-id` (the size of the stack is not modified).
(`__FB_UNIQUEID_PUSH__` allows to push a new unique identifier on to the stack, and `__FB_UNIQUEID_POP__` allows to pop an identifier off of the stack)
Note:
- The 'stack-id' name itself is a separate namespace from all other symbols.
- The stack can only contain 'unique identifiers'.
- 'unique identifier' is a name of an fb symbol that is unique to the module, so does not conflict or shadow other symbol names ('unique identifier' will have the form 'LT_xxxx' as a name so it might not be completely unique).
- fb uses the form 'LT_xxxx' internally for labels, symbols, temp variables, etc (so should avoid naming fbc symbols of this form for any fbc program since version 0.0).
`__FB_UNIQUEID__` simply expands to unquoted text. So the name, for example 'Lt_0004', can be used wherever an fb symbol is required (a variable, procedure name, type name, etc.).
`__FB_UNIQUEID__` returns an unquoted empty string when the stack is empty or has never been filled.
Example
`
__FB_UNIQUEID_PUSH__( stk )
#print __FB_UNIQUEID__( stk )
__FB_UNIQUEID_PUSH__( stk )
#print __FB_UNIQUEID__( stk )
__FB_UNIQUEID_PUSH__( stk )
#print __FB_UNIQUEID__( stk )
__FB_UNIQUEID_POP__( stk )
#print __FB_UNIQUEID__( stk )
__FB_UNIQUEID_POP__( stk )
#print __FB_UNIQUEID__( stk )
__FB_UNIQUEID_POP__( stk )
/' Compiler output example:
Lt_0006
Lt_0007
Lt_0008
Lt_0007
Lt_0006
'/
`
See also `__FB_UNIQUEID_PUSH__` and `__FB_UNIQUEID_POP__` examples.
Version

- Since fbc 1.08.0

Differences from QB

- New to FreeBASIC

See also

- `__FB_UNIQUEID_PUSH__`
- `__FB_UNIQUEID_POP__`