Prolog | Warren Abstract Machine - A embedded Prolog compiler | Translation library

by Trismegiste PHP Version: Current License: No License

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kandi X-RAY | Prolog Summary

Prolog is a PHP library typically used in Utilities, Translation applications. Prolog has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

I went through a lot a trouble thanks the "soft-typing" of PHP and the damned "===" but even if I still prefer Java and strong typing, the managing of strings and arrays in PHP is awsum. There's probably much optimizations to do since the design was not thought for PHP. The good thing is my knowledge of PHP internals has improved.

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Quality

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Support

Prolog has a low active ecosystem.

It has 25 star(s) with 2 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 1 have been closed. On average issues are closed in 11 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of Prolog is current.

Quality

Prolog has no bugs reported.

Security

Prolog has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

Prolog does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

Prolog releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed Prolog and discovered the below as its top functions. This is intended to give you an instant insight into Prolog implemented functionality, and help decide if they suit your requirements.

convert structure to code
Run a query
Executes the WAM command .
Read a Program .
Update the labels of the statements
Returns an integer representation of a function
Returns the value as an array .
Update names of processors
compile a query
Undo a reference

Get all kandi verified functions for this library.

Prolog Key Features

No Key Features are available at this moment for Prolog.

Prolog Examples and Code Snippets

No Code Snippets are available at this moment for Prolog.

Community Discussions

Trending Discussions on Prolog

How does this Zebra solution in prolog work?

Concat a List of Strings with additional Strings in between

Prolog: existentially quantifying

Prolog - Infinite loop with very basic rule definition

Prolog: a list of characters <=> list of character list

How to convert a string to a single-element list?

Combining two facts via a boolean OR in Gnu Prolog

Convert Binary to decimal predicate

Meta-predicate that receives a list of goals as input

Prolog - How would I recursively build a list?

QUESTION

How does this Zebra solution in prolog work?

Asked 2021-Jun-14 at 21:51

zebra_owner(Owner) :-
    houses(Hs),
    member(h(Owner,zebra,_,_,_), Hs).

water_drinker(Drinker) :-
    houses(Hs),
    member(h(Drinker,_,_,water,_), Hs).


houses(Hs) :-
    length(Hs, 5),                                            %  1
    member(h(english,_,_,_,red), Hs),                         %  2
    member(h(spanish,dog,_,_,_), Hs),                         %  3
    member(h(_,_,_,coffee,green), Hs),                        %  4
    member(h(ukrainian,_,_,tea,_), Hs),                       %  5
    adjacent(h(_,_,_,_,green), h(_,_,_,_,white), Hs),         %  6
    member(h(_,snake,winston,_,_), Hs),                       %  7
    member(h(_,_,kool,_,yellow), Hs),                         %  8
    Hs = [_,_,h(_,_,_,milk,_),_,_],                           %  9
    Hs = [h(norwegian,_,_,_,_)|_],                            % 10
    adjacent(h(_,fox,_,_,_), h(_,_,chesterfield,_,_), Hs),        % 11
    adjacent(h(_,_,kool,_,_), h(_,horse,_,_,_), Hs),              % 12
    member(h(_,_,lucky,juice,_), Hs),                         % 13
    member(h(japanese,_,kent,_,_), Hs),                       % 14
    adjacent(h(norwegian,_,_,_,_), h(_,_,_,_,blue), Hs),          % 15
    member(h(_,_,_,water,_), Hs),       % one of them drinks water
    member(h(_,zebra,_,_,_), Hs).       % one of them owns a zebra

adjacent(A, B, Ls) :- append(_, [A,B|_], Ls).
adjacent(A, B, Ls) :- append(_, [B,A|_], Ls).

...

ANSWER

Answered 2021-Jun-14 at 21:46

The houses list Hs is not empty at all, ever. It is created right at the very beginning with

Source https://stackoverflow.com/questions/67975434

QUESTION

Concat a List of Strings with additional Strings in between

Asked 2021-Jun-14 at 19:16

Here is what I'm searching for. I want to concat a given list for example:

...

ANSWER

Answered 2021-Jun-14 at 12:09

You are looking for an "intersperse" or "join" function, which is hidden behind the atomic_list_concat/3 predicate:

atomic_list_concat/3

atomic_list_concat(+List, +Separator, -Atom)

or alternatively to create SWI-Prolog "strings" (which are supposed to be used in scenarios where you process text):

atomics_to_string/3

atomics_to_string(+List, +Separator, -String)

Source https://stackoverflow.com/questions/67969185

QUESTION

Prolog: existentially quantifying

Asked 2021-Jun-14 at 12:48

I am trying to understand the usage of existentially quantifying. What I know by now is this technique is used with setof, findall, bagof. Further, I found a tutorial. However, I am not sure when and how I do the Vars^Goal (existentially quantifying) in Prolog.

Here is the example, my goal is to find two employees who know each other but work at different companies, binding the result with L showing Name1-Name2:

...

ANSWER

Answered 2021-Jun-14 at 12:48

I am not sure when and how I do the Vars^Goal (existentially quantifying) in Prolog.

The easiest answer is: Don't do it, ever. You can always introduce an auxiliary predicate that captures exactly the query you want, exposing exactly the arguments you want and nothing else (that would require quantification), and with a nice self-documenting name.

In your example, you can define:

Source https://stackoverflow.com/questions/67926396

QUESTION

Prolog - Infinite loop with very basic rule definition

Asked 2021-Jun-13 at 19:03

I was trying to practice Prolog, as suggested by my TA, I am trying to create the rule append3(A,B,C,D) which means D is the result of the append of A,B and C.

The definition of append(A,B,C) is given

...

ANSWER

Answered 2021-Jun-12 at 04:06

You need to flip the predicates append(A, B, X), append(X, C, D). Since all three variables A, B, and X are unbound in append(A, B, X) prolog tries to satisfy it and then constrain it with append(X, C, D) which will always fail after giving you existing solutions. So it enters an infinite loop.

Try just executing append(A, B, X). all of them unbound. Prolog should show you an infinite sequence of solutions, these fail in the next clause append(X, C, D).

Flip the predicates and you should be fine.

Source https://stackoverflow.com/questions/67944572

QUESTION

Prolog: a list of characters <=> list of character list

Asked 2021-Jun-13 at 10:45

I am implementing a words/2 predicate in which a list of characters can be rendered to a list of the character as a word inside a list. I use the mathematical symbol <=> to denote that they're working in any mode. Please advise if there's a better expression.

The example:

...

ANSWER

Answered 2021-Jun-07 at 14:32

split(_, [], [[]]).
split(C, [C|Xs], [[]|Ys]) :-
    split(C, Xs, Ys).
split(C, [X|Xs], [[X|Y]|Ys]) :-
    split(C, Xs, [Y|Ys]).

Source https://stackoverflow.com/questions/67872720

QUESTION

How to convert a string to a single-element list?

Asked 2021-Jun-12 at 14:42

I am new to prolog and I would like to convert a string: 'test string' to an array with a single element: ['test string'] so I can append it to an existing list.

...

ANSWER

Answered 2021-Jun-08 at 16:17

Just write it as is:

Source https://stackoverflow.com/questions/67890259

QUESTION

Combining two facts via a boolean OR in Gnu Prolog

Asked 2021-Jun-11 at 01:12

I'm totally new to Prolog. So please excuse this possibly extermely simple qiuestion: I have a few facts like

...

ANSWER

Answered 2021-Jun-11 at 01:12

The operator you are using #\/ is a Boolean Finite Domain operator used in constraint programming clp(b).

If you just want a conjunction of two facts A and B, use A, B. If you want a disjunction of them use A; B.

In your case you can just type likes(paul, bikes), likes(paul, cars)..

Source https://stackoverflow.com/questions/67930129

QUESTION

Convert Binary to decimal predicate

Asked 2021-Jun-05 at 10:52

convertBinToDec(B,D):- atom_number(S,B),
                       atom_length(S,L),
                       sub_atom(S, 0, 1, After,S1),
                       atom_number(S1,N),
                       L1 is L-1,
                       sub_atom(S, 1,L1, After ,S2),
                       atom_number(S2,B2),
                       convertBinToDec(B2,D1),
                       D is D1+((2*N)**L1).
convertBinToDec(0,0).
convertBinToDec(1,1).

...

ANSWER

Answered 2021-Jun-04 at 15:42

You have used After two times. Any usage of a variable in the clause can be instantiated to a only a single value. After cannot take two different values in two calls to the procedure sub_atom. This will work, try figuring out why?

Source https://stackoverflow.com/questions/67839517

QUESTION

Meta-predicate that receives a list of goals as input

Asked 2021-May-29 at 06:31

I've implemented the following meta-predicate that use SWI-Prolog engines to simultaneously enumerate solutions to two or more backtrackable predicates.

...

ANSWER

Answered 2021-May-29 at 06:31

I think it should be

Source https://stackoverflow.com/questions/67540772

QUESTION

Prolog - How would I recursively build a list?

Asked 2021-May-29 at 03:43

I'm working through the exercises on Learn Prolog Now! and I'm stumped on the very last question. Given the following facts:

...

ANSWER

Answered 2021-May-29 at 03:43

Your are not changing G appropriately in the travel/3 predicate.

Source https://stackoverflow.com/questions/67747443

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Prolog

You can download it from GitHub.
PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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