# Documentation for method base

Documentation for method base, assembled from the following types:

# role Real

From Real

## (Real) method base

method base(Real: Int where 2..36, ? --> Str)

Converts the number to a string, using `$base`

as base. For `$base`

larger than ten, capital Latin letters are used.

255.base(16); # 'FF'

The optional `$digits`

argument asks for that many digits of fraction (which may not be negative). If omitted, a reasonable default is chosen based on type. For Int this default is 0. For Num, the default is 8. For Rational, the number of places is scaled to the size of the denominator, with a minimum of 6.

A special value of `Whatever`

(`*`

) can be given as `$digits`

, which functions the same as when `$digits`

is not specified for all `Real`

types except the `Rationals`

. For `Rationals`

, the `Whatever`

indicates that you wish all of the possible digits of the fractional part, but use caution: since there's no detection of repeating fractional parts (the algorithm will eventually stop after generating 2**63 digits).

The final digit produced is always rounded.

say pi.base(10, 3); # OUTPUT: «3.142»say (1/128).base(10, *); # OUTPUT: «0.0078125»say (1/100).base(10, *); # OUTPUT: «0.01»

say (1/3) .base(10, *); # WRONG: endlessly repeating fractional part

For reverse operation, see `parse-base`