| Command Summary | Command Syntax | Calculator Compatibility | Token Size |
|---|---|---|---|
| Returns true if the variable is defined | isVar(varname) | This command works on all calculators. | X byte(s) |
Menu Location
[CATALOG][I] + navigate down with arrows
The isVar() command
Returns true if the variable inputted has a value, false otherwise.
:isVar(x)
false
:5 -> x
:isVar(x)
true
Authors: