std-vl-available-p | ![]() |
Predicate if a VL IDE or RTS is available (loaded), not if it's running.
If a VL-System is running -that means if the current function was evaluated from VLISP or ViLL- check STD-VL-P
.
If STD-VL-AVAILABLE-P
returns T, there is a chance to load your app via VL-EVAL-STR
or VL-LOAD
or similar methods into the VL system. If STD-VL-P
is also T then there's no problem at all, just use load.
Cached version
This function is only called once, the result is stored in the global symbol *DEF-VL-AVAILABLE*
. All subsequent calls just return a result dependent on the value of this symbol.
None
T or nil.
None.
Defined in STDINIT