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README.md

RUTILS is a syntactic utilities package for Common Lisp

RUTILS logo

(that aims to radically simplify the Lisp programmer's life both in the REPL and in large system development)

RUTILS stands for RADICAL-UTILITIES :)

See the announcement.

Read the tutorial for usage details or the quickdocs.

Short history

Originally, RUTILS stood for REASONABLE-UTILITIES, but now I switched to calling them RADICAL-UTILITIES, because they make some uncommon and not generally acceptable choices in terms of style of CL development. Namely:

  • Introducing several literal notations for anonymous functions, hash-tables, heredoc-strings etc.
  • Adding a lot of abbreviations of long symbols from the CL package
  • Having several versions of the same utilities with different names

But, what's more important, they aim to radically simplify Lisp programming in the small (with a special accent on simplifying REPL-driven development).

See the original rationale for REASONABLE-UTILITIES.

The current version is 5.0.0.

Major Features

  • "Modern" readtable with support for literal syntax for hash-tables, lambdas and heredoc-strings
  • Common macros like WITH-GENSYMS, ONCE-ONLY, EVAL-ALWAYS etc. and other symbol manipulation utilities
  • Basic anaphoric macros
  • A simple pair data structure and accompanying utilities
  • List manipulation utilities
  • Hash-table manipulation utilities
  • Hash-set manipulation utilities
  • Sequence manipulation utilities (including SPLIT-SEQUENCE, or rather, simply SPLIT)
  • Array manipulation utilities
  • String manipulation utilities
  • Tree manipulation utilities
  • generic access to elements of any data structure: GENERIC-ELT/?
  • ITER macro with keywords support
  • generic BIND
  • Clojure-style threading macros -> and ->>

Explicitly not supported

The following broad topics are not supported by design:

  • Concurrency.

    The reason is not that I consider this not useful or general-purpose enough, but rather, that it's a whole new paradigm, and the scope of RUTILS is too small to comfortably accommodate it.

  • Functional paradigm.

    As in the above, it's as well a whole other paradigm. It has a limited, but reasonable support in CL. Other features should be unified in it's own package, and maybe RUTILS can serve as a model for such package or even accommodate it in the future.

  • Advanced collections are as well a separate area in CS, so it requires a lot of effort to maintain and develop a comprehensive package in it.

    Look at FSET and CL-CONTAINERS for such things.

  • MOP. MOP abstraction layer is a CDR and it is as well an essential part of CL. It is implemented and well supported by CLOSER-MOP.

Technical notes

Dependencies

Exported features

The following symbols are added to *FEATURES*:

  • :split-sequence
  • :iter

Organizational notes

(c) 2009-2019, Vsevolod Dyomkin vseloved@gmail.com

See LICENSE for usage permissions. See AUTHORS for credits.

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Radical Utilities for Common Lisp

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