toDoubleNullable method
safely get an double from a string
Implementation
// https://api.flutter.dev/flutter/dart-core/double/tryParse.html
double? toDoubleNullable() => isEmpty ? null : double.tryParse(this);
safely get an double from a string
// https://api.flutter.dev/flutter/dart-core/double/tryParse.html
double? toDoubleNullable() => isEmpty ? null : double.tryParse(this);