built_in_protocols.md

Built-in Protocols

Associative

The assoc and dissoc functions make use of the Associative protocol, for functional updates (often just copy-on-write) of various associative data structures. Associative is implemented for:

Piglet:

• dict
• set

JavaScript:

• null
• js:Array (indexed access)
• js:Object
• js:Set

Conjable

The conj function make use of the Conjable protocol, for functionally adding one or more elements to a collection. Conjable is implemented for:

Piglet:

• dict
• set
• cons
• list
• Context
• Range
• Repeat

JavaScript:

• null
• js:Array
• js:Object
• js:Set
• js:Map

Counted

Note that more things than these listed can be counted with count, but they require walking a sequence.

Functions:

• count

Piglet:

• list
• dict
• set
• repeat
• range

JavaScript:

• js:Array
• js:Map
• js:Set

Derefable

Functions

• deref, @

• Var

• Box

DictLike

Empty

Eq

Hashable

Lookup

MutableAssociative

MutableCollection

Named

Repr

Seq

Seqable

Sequential

WithMeta

Walkable

QualifiedName

Watchable

Swappable

TaggedValue