method

toStringAsExponential

Source

/**
 * Returns an exponential string-representation of `this`.
 *
 * Converts `this` to a [double] before computing the string representation.
 *
 * If [fractionDigits] is given then it must be an integer satisfying:
 * `0 <= fractionDigits <= 20`. In this case the string contains exactly
 * [fractionDigits] after the decimal point. Otherwise, without the parameter,
 * the returned string uses the shortest number of digits that accurately
 * represent [this].
 *
 * If [fractionDigits] equals 0 then the decimal point is omitted.
 * Examples:
 *
 *     1.toStringAsExponential();       // 1e+0
 *     1.toStringAsExponential(3);      // 1.000e+0
 *     123456.toStringAsExponential();  // 1.23456e+5
 *     123456.toStringAsExponential(3); // 1.235e+5
 *     123.toStringAsExponential(0);    // 1e+2
 */
String toStringAsExponential([int fractionDigits]);