Convert String value to Int, or Int to String, with given radix.
parseInt : String -> Result Error Basics.Int
Convert String to Int assuming base 10.
parseInt "314159" == Ok 314159
parseInt "foo" = Err (OutOfRange 'o')
parseIntOct : String -> Result Error Basics.Int
Convert String to Int assuming base 8 (octal). No leading '0' is required.
parseIntHex : String -> Result Error Basics.Int
Convert String to Int assuming base 16 (hexadecimal). No leading characters
are expected; input starting with "0x" (or any other out of range character)
will cause an Err
return.
parseIntRadix : Basics.Int -> String -> Result Error Basics.Int
Convert String to Int assuming given radix. Radix can be any of
2..36. Leading zeroes are ignored. Valid characters are the alphanumerics: those
in the ASCII range [0-9a-zA-Z]. Case does not matter. For radixes beyond 16 the
normal [A-F] range for hexadecimal is extended in the natural way. Any invalid
character results in a Err
return. Any valid character outside of the range
defined by the radix also results in an Err
. In particular, any initial '-' or
' ' (space) is an error. An Ok
return means that the entire input string was
consumed. The empty string results in Ok 0
parseIntRadix 16 "DEADBEEF" =
Ok 3735928559
toRadix : Basics.Int -> Basics.Int -> Result Error String
Convert Int to String assuming given radix. Radix values from 2..36 are
allowed; others result in an Err InvalidRadix
. Negative numbers get an initial
'-'.
toRadix 16 1234 == Ok "4D2"
toRadix 8 -99 == Ok "-143"
toRadixUnsafe : Basics.Int -> Basics.Int -> String
Convert Int to String assuming given radix. Radix value must be in 2..36 (not checked, so it can crash).
toRadixUnsafe 16 3735928559 == "DEADBEEF"
toRadixUnsafe 37 36 --> crash
toOct : Basics.Int -> String
Convert Int to octal String.
toHex : Basics.Int -> String
Convert Int to hexadecimal String.
intFromChar : Basics.Int -> Char -> Result Error Basics.Int
Convert an alphanumeric character to an int value as a "digit", validating
against the given radix. Alphabetic characters past "F" are extended in the
natural way: 'G' == 16, 'H' == 17, etc. Upper and lower case are treated the
same. Passing a non-alphanumeric character results in the InvalidChar
error. If the resulting value would be greater than the given radix, an
OutOfRange
error results instead.
charFromInt : Basics.Int -> Char
Convert Int to corresponding Char representing it as a digit. Values from 10..15 are represented as upper-case 'A'..'F'. Values 16 and above extend the hexadecimal characters in the natural way. This function assumes that the input value is in the range 0 .. 36.
Possible Result.Err returns from these functions.