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CELP 1.1, Jan 2007
by Yuri Gribov (Moscow, Russia)

Requires: Matlab 7.1

Feature requests, bug reports and comments are welcomed at
[e-mail]

Description
-----------

CELP (CELl Processing) is a functional programming package for Matlab.
It is often better to use FP instead of loops:
	- it's more compact;
	- it's more clear.

Matlab has all prerequisites to implement a Lisp-like FP:
	- anonymous functions, @'s  <-> lambdas;
	- FEVAL                     <-> FUNCALL, EVAL, APPLY;
	- cell arrays               <-> lists.

Matlab has also several peculiarities:
	- cell arrays may have arbitrary dimensions (not only 1d);
	- functions may have several outputs
		(btw you can use builtin DEAL to implement it in @'s);
	- vectors can be converted to cells and back using
        NUM2CELL and CELL2MAT.

Currently the package includes
	CPAPPLY Analogue of Lisp's APPLY
	CPBIND Substitution of argument
	CPEVAL Evaluate multioutput function and return outputs in one cell array
	CPFILTER Analogue of Lisp's FILTER
	CPIF Conditional composition of functions
	CPMAP Analogue of Lisp's MAPCAR
	CPREDUCE Analogue of Lisp's REDUCE
(use 'help *' for more info and examples).

CPFILTER, CPMAP, CPREDUCE are equivalents of Lisp's routines. The latter
two are implemented in MEXs for speed.

CPIF and CPBIND are used for construction of new functions from
defined. They are implemented with the help of nested functions.

CPAPPLY, CPEVAL deal with multioutput functions. One general limitation of
M-language is that when you write
	f(g(x))
only one output of g(x) is substituted into f. Thus you need to use
	[y,z] = g(x);
	f(y,z)
to substitute all outputs. Using CELP's functions you may code it as
	cpapply(@f,cpeval(2,@g,x))

The main disadvantage of CELP is speed - evaluation of anonymous functions
can be quite slow. Thus I do not recommend to use CELP with @'s in
intensive calculations (probably Nathan Thern's TMP_HANDLE may be of help
here - search for it on FEX).

Changelog
---------

Ver. 1.1, Jan 2007
	Corrections in help
	Removed CPREP (see 'help cpmap'), CPCOMP
    Changed signature of CPBIND
    Extended CPBIND to allow function substitution
	Extended CPIF to allow non-function arguments