default ( value, value, ... ) |
Evaluates the operands from left to right and returns
the first one which is defined and not null.
Returns null if all operands are null or not defined, otherwise the value
which is defined and not null.
In case you use operands that are not defined, you should not use a function call as operand, too. Instead, assign the result of the function call to a variable first and pass this variable to the default function.
| input:||resulting output:|
<? default (null,5,7)>
<? default (null,ff.x.y.z,null) "Nn">
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