GetAssignmentFactory return AssignmentFactory for registering new Assigment .

GetVariableFactory return VariableFactory.

GetVariableValue get value of variable, also handlers variable cacheing, hooking logic .

ToArray convert value to []interface{}.

WithCache ContextOption.

WithData return new *Context contains data.

WithTrace ContextOption.

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ExecutorGroup.

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ProbabilitySet set value with specified probability.

SimpleVariable implements Variable interface.

StaticValue static value implements Valuer interface.

StdCondition.

StdExecutor.

Condition interface.

["key", "-", ["key"]].

Executor.

["key", "+", {}].

["key", "=", "val"].

ConditionGroup.

ValueFunc implements Valuer interface.