Lush: Reference Manual

1 Lush: Reference ManualL eon Bottou, Yann LeCunFebruary 10, Revealed .. Areas .. does LUSH stand for? .. 252 Getting Started: A Quick on Linux/UNIX .. Lush .. Bugs and Problems .. Help and Documentation Browsing .. Syntax .. Names and Special Characters .. Types .. Definitions .. , Conditionals, Local Variables, and Such .. Function Compilation .. Program Files .. On-Line Documentation .. Multiple File Programs and Search Path .. C Function Calls from Lush .. Mixing Lisp and In-Line C Code .. Lists .. Strings and Regular Expressions.

2 Scalars, Vectors, Matrices, Tensors, and Storages .. Working with Storages .. Manipulating Tensors and IDX .. Tensor Iterators .. IDX Manipulations .. Simple Tensor Operations .. Operations between IDX and Scalars .. Contracting Operations with Scalar Results .. Special Inner and Outer Products .. Simple Linear Algebra .. Complex Numbers .. Object-Oriented Lush Programming .. A New Class Definition .. Inheritance .. Input and Output .. Simple String Input/Output .. Complete File Reading.

3 Lush Object Reading/Writing .. C-like stdio Functions .. Socket Communication .. Graphics .. Multiple Window Management .. Editable Graphics via comdraw/ivtools Driver .. PostScript File Graphics .. Curve Plotting .. Lush Executable Shell Scripts .. Executable GUI Applications .. Lush Standalone Binary Executables .. Ogre GUI Toolkit .. Simple Directmedia Layer(SDL) Interface Usage .. sdlidx-screen class: Mapping the Contents of an IDX toan SDL Screen .. sdl-screen class: Doubled Buffered Animations .. sdl-sprite: Movable Animated Objects.

4 Sdlgl-screen class: OpenGL 3D Graphics in SDL OpenGL Usage .. 653 Lush Interpreter Basics .. Startup .. Lush Reader .. Lush Evaluator .. in Lush .. in Lush .. Lush .. Memory Management .. Libraries .. 73 CONTENTS54 Core Interpreter and Startup .. Manipulation Functions .. List Manipulation Functions .. Numerical Functions .. Arithmetic Functions .. Numerical Functions .. Numbers .. Operators .. Arithmetic .. (defvarname[val]) .. (defparametername[val]) .. (setqv1 [vn an]) .. (setv a) .. (incrv[n]) .. (nameds).

5 (nameofs) .. (namedcleans) .. ( ) .. ( ) .. (symblist) .. (oblist) .. (macrochps) .. (putpanything name value) .. (getpanything name) .. and Packages .. ( ) .. (packagename .. ) .. Structures .. ( ) .. (applyf l) .. (quotea) .. a.. ( ) .. ( ) .. (let ((s1 v1) .. (sn vn)) ) .. (let* ((s1 v1) .. (sn vn)) ) .. (let-filter ((filter data)) ) .. (ifcond yes[ ]) .. (whencond ) .. (whilecond ) .. (do-whilecond ) .. (repeatn ) .. (mapwhilecond ) .. (for (symb start end[step]) ) .. (mapfor (symb start end[step]) ).

6 ( ) .. (selectqs ) .. (mapcf ) .. (mapcarf ) .. (rmapcf ) .. (rmapcarf ) .. (each ((s1 v1) .. (sn vn)) ) .. (all ((s1 v1) .. (sn vn)) ) .. List .. a Function .. String Functions .. Expressions (regex) .. Strings .. Creation and Allocation .. Allocation .. Access .. Storage Functions .. Matrices, Vectors, Tensors, Indexes and IDX .. IDX Structure .. IDX Creation and Allocation .. IDX Literals .. IDX Copying and Cloning .. IDX Iterators .. IDX Information .. IDX Manipulations .. Loading and Saving.

7 Component-wise Unary Operations .. Component-wise Dyadic Operations .. Contracting Operations with Scalar Result .. Operations between Tensors and Scalars .. Matrix/Vector and 4-Tensor/Matrix Products .. Outer Products .. Backward Compatibility Functions .. idx-array: arrays of vectors and matrices .. Objects .. Object Terminology .. Inheritance .. Predefined Classes .. Defining a Class .. Creating Objects .. Accessing Slots .. Defining Methods .. Sending Messages .. Constructors and Destructors .. Predefined Methods.

8 Hash Tables .. Representing Associations with Hash Tables .. Representing Sets with Hash Tables .. Dates .. (date-to-daydate) .. (day-to-datedaynumber) .. (today) .. (now) .. (split-datedate) .. (date-typedate) .. (date-extenddate from to) .. (date-to-stringdate[format]) .. (string-to-datestring[from to]) .. (date-add-seconddate count) .. (date-add-minutedate count) .. (date-add-hourdate count) .. (date-add-daydate count) .. (date-add-monthdate count[opt]) .. (date-add-yeardate count[opt]) .. (date-codedate flags).

9 Loading and Executing Lush Program Files .. (loadin[out[prompt]]) .. Lfilename.. file-being-loaded .. (libloadlibname[opt]) .. (libload-dependencies [fname]) .. (libload-add-dependencyfname) .. (find-filedirlist filename extlist) .. (savef ) .. (autoloadf ) .. Lisp-Style Input/Output .. Input .. Output .. File Names .. Searched Path .. Files and Directories Management .. Files and Descriptors .. Binary Input/Output .. Pipes and Sockets .. Miscellaneous .. Debug .. System .. Special Numerical Values (IEEE754).

10 Graphics .. Creating a Window .. Drawing .. Grabbing Images .. Drawing with Colors .. Drawing Text .. The Drawing Context .. Double Buffering and Synchronization .. Plotting Functions .. Events .. System Specific Graphic Functions .. Producing Encapsulated PostScript Files .. Producing SVG Graphics .. Graphical Utilities .. Editable Graphics with comdraw/ivtools .. Events and Timers .. Event Queue .. Timers .. Documentation and Help System .. Using the Online Manual .. Writing Documentation .. Word Processor.