Operators and keywords that get or set metadata.

attr

Attributes of a list

cols

Columns of a table

fkeys

Foreign keys of a table

key

Variously:

• Keys of a dictionary
• key columns/s of a keyed table
• contents of a filesystem directory
• whether a file exists
• whether a variable name is in use
• name of the table linked to by a foreign-key column
• type of a vector
• name of an enumerating list
• a synonym for til
keys

Primary key column/s of a table

meta

# Set Attribute

Set the attribute of a list

tables

List of tables in a namespace

type

Datatype of an object

.Q.ty

Datatype as a character code

value

Variously

• values of a dictionary
• value of a variable passed by name
• symbol vector of an enumeration
• decomposition of a projection or composition
• internal code of a primitive
• original map of an extension
• internal code of a primitive function
• the result of applying the first item of a list to the rest of it
• the result of evaluating a string
view

Expression defining a view

views

List of views in the default namespace

.Q and .z namespaces