Append a base-64 encoded Long to a StringBuilder.
Append a base-64 encoded Long to a StringBuilder.
The Base64 encoding uses the standard Base64 alphabet (with '+' and '/'). It does not pad the result. The representation is just like base 10 or base 16, where leading zero digits are omitted.
The number is treated as unsigned, so there is never a leading negative sign, and the representations of negative numbers are larger than positive numbers.
Convert this Long to a base 64 String, using the standard base 64 alphabet.
Efficient conversion of Longs to base 64 encoded strings.
This is intended for use in e.g. cache keys.