Cons creates a cons cell.

EnvKeys returns the keys of an environment, including any parents' keys.

Evaluate a list of expressions.

IsBalanced returns true iff parens are balanced.

LexItems lexes a string into a slice of tokens.

LexParseEval lexes, parses, and evaluates the given string.

LexRepr returns a string representation of a known lexeme.

LongDocStr returns a long, Markdown docstr for a function, macro or special form.

Num is a `num` constructor, which can take a string or a ("normal") number.

Parse takes a slice of tokens and returns a slice of Sexprs.

ReadLine reads a line from stdin "robustly".

ShortDocStr returns an abbreviated explanation of all functions, macros and special forms.

Nil is the empty list / cons cell.

go:embed l1.l1.

True is the generic truthy item.

Atom is the primitive symbolic type.

Builtin represents a function with a native (Go) implementation.

ConsCell is a cons cell.

Env stores a local environment, possibly pointing to a caller's environment.

Number wraps a big.Int (for now).

Token is a lexeme with a line number.

Sexpr is a general-purpose interface for representing S-expressions.