ALExpressionWatcher API

NAOqi Core - Overview | API | ExpressionObject API

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Namespace : AL

Method list

class ALExpressionWatcher

• Methods for ALExpressionWatcher:
  • ALExpressionWatcher::add

Methods

ExpressionObject ALExpressionWatcher::add(const std::string& expression, const int& report_mode)

Adds a condition expression to ALExpressionWatcher engine.

Return an ExpressionObject that embeds some methods and a qi::Signal triggered each time the condition expression is valid with condition expression value.

Note: this ExpressionObject should be kept alive as a variable otherwise the expression is not watched anymore. For further details, see: Example.

Parameters:

• expression – condition expression in Conditions expression language.
• report_mode – { REPORT_CHANGE = 0, REPORT_EDGE = 1, REPORT_EDGE_TRUE = 2 }. For further details see: Report modes.

Returns:

Correspondig ExpressionObject.