The native-lazy-seq Reference Manual

3.1.1 native-lazy-seq/native-lazy-seq.asd

Source

native-lazy-seq.asd.

Parent Component

native-lazy-seq (system).

ASDF Systems

native-lazy-seq.

3.1.2 native-lazy-seq/native-lazy-seq.lisp

Source

native-lazy-seq.asd.

Parent Component

native-lazy-seq (system).

Packages

native-lazy-seq.

Public Interface

• elt (method).
• generator (reader method).
• (setf generator) (writer method).
• iterator-endp (method).
• lazy-seq (macro).
• lazy-seq (class).
• length (method).
• make-sequence-like (method).
• make-simple-sequence-iterator (method).
• remove-if (method).
• remove-if-not (method).
• subseq (method).
• with-iterators (macro).

Internals

• call-with-iterators (function).
• contents (reader method).
• (setf contents) (writer method).
• generate-element (function).

5.1.1 Macros

Macro: lazy-seq (() &body body) ¶

Construct a lazy sequence.

BODY is evaluated each time we want to generate a new element in the lazy sequence. It should result in two values ELEMENT, PRESENT-P. If there are element to be generated, ELEMENT should be the next ELEMENT and PRESENT-P should be non-nil. Otherwise, PRESENT-P should be nil.

Package

native-lazy-seq.

Source

native-lazy-seq.lisp.

Macro: with-iterators ((element next endp) seq &body body) ¶

Package

native-lazy-seq.

Source

native-lazy-seq.lisp.

5.1.2 Generic functions

Generic Reader: generator (object) ¶

Package

native-lazy-seq.

Methods

Reader Method: generator ((lazy-seq lazy-seq)) ¶

automatically generated reader method

Source

native-lazy-seq.lisp.

Target Slot

generator.

Generic Writer: (setf generator) (object) ¶

Package

native-lazy-seq.

Methods

Writer Method: (setf generator) ((lazy-seq lazy-seq)) ¶

automatically generated writer method

Source

native-lazy-seq.lisp.

Target Slot

generator.

5.1.3 Standalone methods

Method: elt ((s lazy-seq) i) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: iterator-endp ((s lazy-seq) i limit from-end) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: length ((s lazy-seq)) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: make-sequence-like ((s lazy-seq) length &key initial-element initial-contents) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: make-simple-sequence-iterator ((s lazy-seq) &key from-end start end) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: remove-if (predicate (s lazy-seq) &key from-end start end count key) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: remove-if-not (predicate (s lazy-seq) &key from-end start end count key) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

Method: subseq ((s lazy-seq) start &optional end) ¶

Package

sb-sequence.

Source

native-lazy-seq.lisp.

5.1.4 Classes

Class: lazy-seq ¶

Lazy sequence class.
Accept a single initialization argument :GENERATOR, which must be a function.

The function specifies how to lazily generate elements in the sequence. When it is called with no argument, it must return two values ELEMENT, PRESENT-P. If there are element to be generated, ELEMENT should be the next ELEMENT and PRESENT-P should be non-nil. Otherwise, PRESENT-P should be nil.

Package

native-lazy-seq.

Source

native-lazy-seq.lisp.

Direct superclasses

sequence.

Direct methods

• (setf contents).
• contents.
• elt.
• (setf generator).
• generator.
• iterator-endp.
• length.
• make-sequence-like.
• make-simple-sequence-iterator.
• remove-if.
• remove-if-not.
• subseq.

Direct slots

Slot: contents ¶

Initform

(serapeum:vect)

Readers

contents.

Writers

(setf contents).

Slot: generator ¶

Initargs

:generator

Readers

generator.

Writers

(setf generator).

5.2.1 Ordinary functions

Function: call-with-iterators (seq thunk) ¶

Package

native-lazy-seq.

Source

native-lazy-seq.lisp.

Function: generate-element (s) ¶

Try to generate one more element in lazy sequence S. Return true if such a element is successfully generated.

Package

native-lazy-seq.

Source

native-lazy-seq.lisp.

5.2.2 Generic functions

Generic Reader: contents (object) ¶

Package

native-lazy-seq.

Methods

Reader Method: contents ((lazy-seq lazy-seq)) ¶

automatically generated reader method

Source

native-lazy-seq.lisp.

Target Slot

contents.

Generic Writer: (setf contents) (object) ¶

Package

native-lazy-seq.

Methods

Writer Method: (setf contents) ((lazy-seq lazy-seq)) ¶

automatically generated writer method

Source

native-lazy-seq.lisp.

Target Slot

contents.