Singular entities
pig: entity = @e[type=minecraft:pig]
Braces are not required around a selector. A singular entity uses limit-one selection and replaces the previous variable tag whenever it is assigned.
DATACRAFT V2
Entities
Entity values
Entity values connect typed variables to Minecraft selectors without repeatedly storing large selectors in commands.
Identity
The runtime registers the currently executing entity, gives it a generated namespace tag, and stores its UUID in an entity object. This lets an entity survive storage in lists and function calls.
Entity sets
pigs: set[entity] = @e[type=minecraft:pig]
An entity set is a generated tag shared by every member. Union, intersection, insertion, removal, membership, and iteration operate directly on tags.
Command selectors
When an entity value is interpolated into a raw command, DataCraft emits an appropriate tag selector. Runtime helpers centralize common register, resolve, retag, and cleanup operations.