代码搜索：如何学习 PL？
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www.eeworm.com/read/147959/12508208
gif pl.gif
www.eeworm.com/read/335627/12511216
pl config.pl
#!/usr/bin/perl
# a script for use by autoconf to make the Makefiles
# from the Makefile.in's
#
# the original autoconf mechanism first splits all substitutions into groups
# of ca. 90, and than invok
www.eeworm.com/read/249226/12516423
pl genmake.pl
#!/usr/bin/perl
#********************************************************
#* Some code. Copyright (C) 2003 by Pascal Massimino. *
#* All Rights Reserved. (http://skal.planet-d.net) *
#* For Ed
www.eeworm.com/read/249076/12521755
pl desboth.pl
#!/usr/local/bin/perl
$L="edi";
$R="esi";
sub DES_encrypt3
{
local($name,$enc)=@_;
&function_begin_B($name,"");
&push("ebx");
&mov("ebx",&wparam(0));
&push("ebp");
&push("esi");
&push("ed
www.eeworm.com/read/147693/12538493
pl map.pl
% A road-map path-finding problem
% The interesting probem is path from s to t
s( X, Y, C) :- c( X, Y, C); c( Y, X, C).
c( s, a, 2). c( a, b, 2). c( b, c, 2). c( c, d, 3).
c( d, t,
www.eeworm.com/read/147693/12538505
pl leaks.pl
% A toy knowledge base (Fig. 15.5 translated to Prolog)
if kitchen_dry and hall_wet then leak_in_bathroom.
if hall_wet and bathroom_dry then problem_in_kitchen.
if window_closed or no
www.eeworm.com/read/147693/12538522
pl frequent.pl
% Library of frequently used predicates
:- op( 900, fy, not).
% not Goal): negation as failure;
% Note: This is often available as a built-in predicate,
% often written as prefix operator
www.eeworm.com/read/147693/12538557
pl shell.pl
% Figures 16.6, 16.7, 16.8, 16.9 combined, with small improvements
% An expert system shell
:- op( 900, xfx, ::).
:- op( 800, xfx, was).
:- op( 870, fx, if).
:- op( 880, xfx, then).
www.eeworm.com/read/147693/12538610
pl chess.pl
% File chess.pl: Figures 22.6, 22.7, 22.10 combined with
% small practical additions.
% To play a king and rook vs king edngame, this file can be loaded
% into Prolog (togethr with frequent.pl)
www.eeworm.com/read/147693/12538621
pl energy.pl
% File energy.pl: An oscillator model with energy constraint
% (alternative to one in Fig. 20.14).
legalstate( [ X, V, A]) :-
deriv( X, V),
deriv( V, A),
MinusA = a:_,
su