[FIXED] How can I determine if a variable exists from within the Groovy code running in the Scripting Engine?

Issue

How can I determine if a variable exists from within the Groovy code running in the Scripting Engine?

The variable was put by rel="noreferrer">ScriptEngine's put method

Solution

In the groovy.lang.Script there is a method public Binding getBinding(). See also groovy.lang.Binding with method public boolean hasVariable(String name).

Thus you can simple check variable existence like

if (binding.hasVariable('superVariable')) {
// your code here
}

Answered By - Aliaksandr Pyrkh
Answer Checked By - Cary Denson (JavaFixing Admin)