Data Attributes

The attribute operator (.) can be used to recursively resolve values from a compound native Python data type such as an object or dictionary. This can be used when the thing which the rule is evaluating has members with their own submembers. If the resolver function fails, the attribute will be checked to determine if it is a builtin attribute.

Builtin Attributes

The following attributes are builtin to the default Context object.

Attribute Name	Attribute Type
ARRAY Attributes
is_empty	BOOLEAN
length	FLOAT
to_set	SET
DATETIME Attributes
date	DATETIME
day	FLOAT
hour	FLOAT
microsecond	FLOAT
millisecond	FLOAT
minute	FLOAT
month	FLOAT
second	FLOAT
to_epoch	FLOAT
weekday	STRING
year	FLOAT
zone_name	STRING
TIMEDELTA Attributes
days	FLOAT
seconds	FLOAT
microseconds	FLOAT
total_seconds	FLOAT
FLOAT Attributes 1
ceiling	FLOAT
floor	FLOAT
to_str	STRING
MAPPING Attributes
is_empty	BOOLEAN
keys	ARRAY
length	FLOAT
values	ARRAY
SET Attributes
is_empty	BOOLEAN
length	FLOAT
to_ary	ARRAY
STRING Attributes
as_lower	STRING
as_upper	STRING
to_ary	ARRAY
to_flt	FLOAT
to_set	SET
to_int	FLOAT
is_empty	BOOLEAN
length	FLOAT

FLOAT Attributes ¹

Due to the syntax of floating point literals, the attributes must be accessed using parenthesis. For example 3.14.to_str is invalid while (3.14).to_str is valid.