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crpl:docs:refexists
<- CRPL reference <- Vars and Functions
-?!
| Arguments | Result | Notation |
|---|---|---|
| 0 or 1 depending on if variable exists | s1 -- b1 |
Description
Takes a string from the stack and uses it as a variable name. Checks to see if the variable exists (has been assigned). If so, 1 is pushed to the stack else 0.
Examples
# Build a string by concatenating "xy" and "z". "xy" "z" concat -?! trace
crpl/docs/refexists.txt · Last modified: 2021/02/05 11:43 by Karsten75
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