esphome::text_sensor::StatelessLambdaFilter Class Reference

Optimized lambda filter for stateless lambdas (no capture). More...

#include <filter.h>

Inheritance diagram for esphome::text_sensor::StatelessLambdaFilter:

Public Member Functions
	StatelessLambdaFilter (optional< std::string >(*lambda_filter)(std::string))
optional< std::string >	new_value (std::string value) override
Public Member Functions inherited from esphome::text_sensor::Filter
virtual void	initialize (TextSensor *parent, Filter *next)
	Initialize this filter, please note this can be called more than once.
void	input (const std::string &value)
void	output (const std::string &value)

Protected Attributes
optional< std::string >(*	lambda_filter_ )(std::string)
Protected Attributes inherited from esphome::text_sensor::Filter
friend	TextSensor
Filter *	next_ {nullptr}
TextSensor *	parent_ {nullptr}

Detailed Description

Optimized lambda filter for stateless lambdas (no capture).

Uses function pointer instead of std::function to reduce memory overhead. Memory: 4 bytes (function pointer on 32-bit) vs 32 bytes (std::function).

Definition at line 70 of file filter.h.

Constructor & Destructor Documentation

StatelessLambdaFilter()

esphome::text_sensor::StatelessLambdaFilter::StatelessLambdaFilter ( optional< std::string >(* lambda_filter )(std::string) )

inlineexplicit

Definition at line 72 of file filter.h.

Member Function Documentation

new_value()

optional< std::string > esphome::text_sensor::StatelessLambdaFilter::new_value ( std::string value )

inlineoverridevirtual

Implements esphome::text_sensor::Filter.

Definition at line 74 of file filter.h.

Field Documentation

lambda_filter_

optional< std::string >(* esphome::text_sensor::StatelessLambdaFilter::lambda_filter_) (std::string)

protected

Definition at line 74 of file filter.h.

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The documentation for this class was generated from the following file:

• esphome/components/text_sensor/filter.h