toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() => '$mSport_type, $timestamp, $secondindex, $speed, $longitude, $latitude, $altitude, $distance_km, $distance_km_max, $heartrate, $stamina, $stamina_aerobic, $stamina_anerobic, $kcal, $kcal_max, $cadance, $deltadis, $steps, $swimtimeonelap, $swimstrokeonelap, $swimtype, $swimavgstrokefreqonelap, $swimmaxstrokefreqonelap, $swimswolfonelap, $swimavgpaceonelap, $swimlapindex, $accuracy';