Provide a representation of this double value.
The representation is a number literal such that the closest double value to the representation's mathematical value is this double.
Returns "NaN" for the Not-a-Number value. Returns "Infinity" and "-Infinity" for positive and negative Infinity. Returns "-0.0" for negative zero.
For all doubles, d, converting to a string and parsing the string back
gives the same value again: d == double.parse(d.toString()) (except when
d is NaN).
Source
/**
* Provide a representation of this [double] value.
*
* The representation is a number literal such that the closest double value
* to the representation's mathematical value is this [double].
*
* Returns "NaN" for the Not-a-Number value.
* Returns "Infinity" and "-Infinity" for positive and negative Infinity.
* Returns "-0.0" for negative zero.
*
* For all doubles, `d`, converting to a string and parsing the string back
* gives the same value again: `d == double.parse(d.toString())` (except when
* `d` is NaN).
*/
String toString();