# toStringAsFixed() String toStringAsFixed(int fractionDigits); assert(123.456.toStringAsFixed(2) == '123.46'); api.dart.dev/stable/2.12.2/dart-core/num/toStringAsFixed.html toStringAsFixed method - num class - dart:core library - Dart API String toStringAsFixed (int fractionDigits ) A decimal-point string-representation of this number. Converts this number to a double before computing the strin..