Conditional

Conditional operations are those were the goal is to check if a preset condition is real or not. This kind of operations have to operators: If and Nvl

class vtlengine.Operators.Conditional.If

class vtlengine.Operators.Conditional.Nvl

Null class:

`Nvl <https://sdmx.org/wp-content/uploads/VTL-2.1-Reference-Manual.pdf#page=229&zoom=100,72,370>`_operator class. It has the following class methods:

Class methods:

Validate: Class method that validates if the operation at scalar, datacomponent or dataset level can be performed. Evaluate: Evaluates the actual operation, returning the result.