4rpl:commands:refexists
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⇐ Index
Syntax
-?!
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
4rpl/commands/refexists.1610577979.txt.gz · Last modified: 2025/02/14 14:56 (external edit)
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