Add n operands.

1 eval.add

<eval.add>
    <value1 /> !
    <value2 /> ?
</eval.add>

Exceptions

invalid null expesion

Arguments has not been specified.

Example

Add two elements as arguments.

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<xsql-script name='add_sample1'>
    <body>
        <set name='num1'>2</set>
        <set name='num2'>3</set>
        
         <println><eval.add><num1/><num2/></eval.add></println>
    </body>
</xsql-script>

Returns:

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5