toHexString method
Returns a string representing the value of this integer in hexadecimal notation.
Example: Int64(0xf01d).toHexString()
returns 'F01D'
.
The string may interprets the number as unsigned, and has no leading minus, even if the value isNegative.
Example: Int64(-1).toHexString()
returns 'FFFFFFFFFFFFFFFF'
.
Implementation
@override
String toHexString() => _i.toRadixString(16);