lazyeval module
- class src.core.lazyeval.LazyEval(expression, engine)
Bases:
objectA class for lazy evaluation of expressions.
The LazyEval class is used to defer the evaluation of an expression until its value is actually needed. This can be useful in scenarios where evaluating the expression is expensive and might not be required unless certain conditions are met. The class ensures that the expression is evaluated only once, caching the result for subsequent accesses.
- expression
The expression to be lazily evaluated.
- Type:
any
- engine
The engine used to evaluate the expression.
- Type:
ExecutionEngine
- value
The evaluated value of the expression, initialized to None.
- Type:
any
- evaluated
A flag indicating whether the expression has been evaluated, initialized to False.
- Type:
bool
- evaluate()
Evaluates the expression if it hasn’t been evaluated yet.
Returns: The evaluated value of the expression.