LabLISP Guide

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LabLISP versions.

Change log of important versions.

Version 1.3.0.1 on 29.03.2022:

• all functions safe against cyclic lists
• proper-list-p
• printing safely cyclic lists, option *print-shared* for non-cyclic, but shared list structure
• destruction of dropped cyclic list is still not handled and will leak memory
• function definitions with &optional and &rest parameters, also &whole and &body for macros
• list-making functions nconc and append
• application functions mapcar, maplist, mapcan, mapcon, mapc and mapl
• comments and warnings come with “;” prepended

Version 1.2.8.0 on 07.09.2021

• Major change that introduces multiple values, as in function intern, find-symbol, macroexpand.
• Multiple-valued round and values functions.
• Rewrote the macro system, now local macros are possible with macrolet.
• macroexpand and macroexpand-1 now behave properly.
• Introduced setf-able places, and setf special form.
• Accessors nthcdr, first to tenth, also rest.
• Function last.
• The setf-able places make it possible to create cyclic lists, and that leads to crashes - don't make cyclic lists!

Version 1.2.6.4 on 07.07.2021

• Changes to symbol bindings, allows defconstant
• String functions write-to-string and concatenate
• Function set
• Integer atom now works with long long integer type
• User accessible flag *allow-non-literal-const*

Version 1.2.6.0 on 14.05.2021

• Small change to the LabLispHost attachment. Polishing the multi-process evaluation algorithms internally.
• sleep special function.
• dolist and dotimes now accept optional result form.
• Special forms flet and labels for local function definitions.
• load now has optional argument to make it silent.

Version 1.2.5.3 on 20.04.2021

• Applicative functions funcall and apply.
• cond special operator.
• setq now accepts multiple pairs.

Version 1.2.4.7 on 09.04.2021

• Changed the old read/eval mechanism for the expansions of quoting characters, now they are done by reader already.
• Split the value and function namespaces.
• To that, adding boundp, fboundp, symbol-value, symbol-function, functionp, packagep, special-operator-p.
• function and sharp-quote (#’) expansion.

Version 1.2.3.7 on 26.01.2021

• Rebuilt LabLispHost attachment mechanics.
• Functions read and particularly load.
• Added integerp.
• Rebuilt lexical closures, now free variables from closure are evaluated in the dynamic environment.
• Introduced lambda form.

Version 1.2.3.0 on 12.12.2020

• Added several functions for packaging: make-symbol, intern, import, export, unintern, unexport, package-use-list, package-used-by-list, package-internal-symbols, package-external-symbols, unuse-package.
• Whole packaging system is upgraded to work pretty much as in Common LISP, but still missing shadowing of symbols.
• Reader and printer follow the colon and double colon rules for external and internal symbols in packages.
• Renamed the predicate functions to be consistent with Common LISP (symbolp instead of symbol? etc.).
• In general, realized that it make sense to stick to Common LISP language.
• Corrected some hidden artefacts of quoting.

Version 1.2.1.5 on 19.11.2020

• Macro system with defmacro and macroexpand function.

Version 1.2.0.6 on 04.11.2020

• Fixed the command history and colors in output window.
• Generalized the constant function to symbols and lists (constant expressions).
• Whole multithreaded processing with name-process and kill functions.
• Smart wait.
• Backquoting, unquoting and splicing.

Version 1.1.1.9 was initially deployed in lab on 16.07.2020

• Single LISP expression eval.
• Very basic dialect, no macros, no lexical closures, single value and function namespace.