REPR

Returns a string representation of the value in Anduin notation.

Syntax

REPR(val)

Arguments

• val: The value to represent.

Return Value

A string representing the value in Anduin Notation.

Anduin Notation

Anduin Notation is a human-readable format for representing data structures:

• Primitives: Numbers and booleans as-is, strings are quoted.
• Arrays: [item1; item2; ...]
• Lists: #list{item1; item2; ...}
• Dicts: #dict{"key1", value1; "key2", value2; ...}
• Records: #record:KIND<@trait1, @trait2>{...} (or custom if @repr is defined)
• Protocols: #protocol<@trait1, @trait2, ...>

Examples

Numbers and booleans are represented as-is:

REPR(123)

Result: 123

Strings are quoted:

REPR("hello")

Result: "hello"

Arrays use bracket notation:

REPR({1; 2; 3})

Result: { 1; 2; 3 }

Lists show with the #list prefix:

REPR(LIST("a")("b")("c"))

Result: #list{"a"; "b"; "c"}

Dicts show key-value pairs:

REPR(DICT({"a", 1})({"b", 2}))

Result: #dict{"a", 1; "b", 2}

Records show their kind and traits:

=let(
  Animal, RECORD("DOG")({"name"}),
  dog, Animal("Spot"),
  REPR(dog)
)

Result: #record:DOG<@kind>{"name", "Spot"}

See Also

• LIST - List container with @repr method
• DICT - Dict container with @repr method
• RECORD - Record type with @repr method
• PROTOCOL - Protocol type with @repr method