peg | A PEG parser written in PHP | Parser library

 by   wouterj PHP Version: Current License: BSD-3-Clause

kandi X-RAY | peg Summary

kandi X-RAY | peg Summary

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

Of course, using arrays to define the grammar is really ugly. This is why PEG comes with PegGrammar, a parser that is able to parse PEG syntax. It returns a ready to use grammar instance using the parsed grammar. For information about the PEG syntax, see [Parsing Expression Grammars: A Recognition-Based Syntactic Foundation] by Bryan Ford.
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            kandi-support Support

              peg has a low active ecosystem.
              It has 17 star(s) with 5 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of peg is current.

            kandi-Quality Quality

              peg has 0 bugs and 0 code smells.

            kandi-Security Security

              peg has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              peg code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              peg is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              peg releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed peg and discovered the below as its top functions. This is intended to give you an instant insight into peg implemented functionality, and help decide if they suit your requirements.
            • Parse a repeat expression .
            • Parse a sequence .
            • Creates an undefined definition .
            • Flatten a multi - dimensional array .
            • Call the action .
            • Parse input .
            • Creates a new expression
            • Creates a new match instance .
            • Creates an invalid definition .
            • Get the unique identifier .
            Get all kandi verified functions for this library.

            peg Key Features

            No Key Features are available at this moment for peg.

            peg Examples and Code Snippets

            No Code Snippets are available at this moment for peg.

            Community Discussions

            QUESTION

            How to add JointActuator for PlanarJoint?
            Asked 2022-Mar-15 at 16:02

            I am working on a simple 2D peg-in-hole example in which I want to directly control the peg (which is just a box) in 2D. In order to do that, I add a planar joint to attach the peg to the world as in the Manipulation course's example.

            ...

            ANSWER

            Answered 2022-Mar-15 at 09:34

            Right now you have to add the prismatic and revolute joint's yourself to add actuators. Here is a snippet from https://github.com/RussTedrake/manipulation/blob/f868cd684a35ada15d6063c70daf1c9d61000941/force.ipynb

            Source https://stackoverflow.com/questions/71477852

            QUESTION

            ImageResource.ts:182 Uncaught (in promise), with PIXI and Typescript no texture loads using pixi and texturepacker
            Asked 2022-Mar-15 at 14:11

            I am trying to do something very simple with PIXI and Typescript. I decided to switch to using texture packer from loading individual png files and ran into this issue. The issue is when trying to access the texture that is loaded through the spritesheet json file I get a promise error. The code is very simple and I have tried various ways of doing this with no luck. This example is the simplest and uses the example from CodeAndWeb (Texture packer devs site) but in an attempt to translate it to typescript and separated the functionality a bit. Any advice is highly appreciated. Thanks.

            Code Sandbox here: https://codesandbox.io/s/empty-hooks-9g8j6?file=/src/index.ts

            ...

            ANSWER

            Answered 2022-Mar-15 at 14:11

            For anyone who comes across this question, I've had the exact same error. It was hard for me to find solutions on StackOverflow, but in the end, I figured it out.

            First, if you want to use a public server, it'll have to have CORs enabled. Then, it should work fine.

            If you want to use an image hosted on a local server (e.g. using the http-server package to run a local file repository), for the image source, you'll have to use the full link – e.g. http://127.0.0.1:8001 instead of something like localhost:8001, which won't work. You'll also have to enable the CORs option (for instance, for http-server, that would mean adding the --cors flag)

            Source https://stackoverflow.com/questions/68884747

            QUESTION

            How to specify which column to remove in get_dummies in pandas
            Asked 2022-Mar-07 at 17:49

            I have a DataFrame column with 3 values - Bart, Peg, Human. I need to one-hot encode them such that Bart and Peg stay as columns and human is represented as 0 0.

            ...

            ANSWER

            Answered 2022-Mar-07 at 17:31

            IIUC, try use get_dummies then drop 'Human' column:

            Source https://stackoverflow.com/questions/71384968

            QUESTION

            Ruby Mastermind White Pegs Count
            Asked 2022-Feb-07 at 14:41

            I'm a newbie to Ruby programming. It is my second OOP project. I have trouble with counting white pegs under certain condition. And Wikipedia says that:

            -A black key peg is placed for each code peg from the guess which is correct in both colour and position.
            -A white key peg indicates the existence of a correct colour code peg placed in the wrong position.

            I believe that my black peg condition is true, but I can not count my white pegs correctly. Here is the function code piece:

            ...

            ANSWER

            Answered 2022-Feb-07 at 14:41

            -A white key peg indicates the existence of a correct colour code peg placed in the wrong position

            I found my answer. The white peg code control should be

            Source https://stackoverflow.com/questions/71009608

            QUESTION

            How to index each steps of moving disk in Tower of Hanoi (recursive approach)
            Asked 2022-Jan-05 at 09:57

            Printing moving disk from source to destination in TOH( Tower of Hanoi) can easily write in C/C++.(with recursive function) But how can we print index each step ? C code-

            ...

            ANSWER

            Answered 2022-Jan-05 at 09:57

            First note that you do not need to printf something in your else branch since this is being managed by your recursive function base case.

            To print the index, the easiest solution (if we rule out global variables) would be to give your recursive function an additional pointer argument referencing an integer that is the number of lines printed. Each time you print a line, the integer referenced by this pointer is incremented by 1. This gives function tower_ptr below:

            Source https://stackoverflow.com/questions/70581178

            QUESTION

            What is the meaning of `~` in python grammar
            Asked 2021-Dec-30 at 13:22

            I was going through the python grammer specification and find the following statement,

            ...

            ANSWER

            Answered 2021-Nov-19 at 12:30

            It's documented in PEP 617 under Grammar Expressions:

            ~

            Commit to the current alternative, even if it fails to parse.

            rule_name: '(' ~ some_rule ')' | some_alt

            In this example, if a left parenthesis is parsed, then the other alternative won’t be considered, even if some_rule or ‘)’ fail to be parsed.

            The ~ basically indicates that once you reach it, you're locked into the particular rule and cannot move onto the next rule if the parse fails. PEP 617 mentions earlier that | some_alt can be written in the next line.

            Source https://stackoverflow.com/questions/69097732

            QUESTION

            Use colored Box Shadow in Tailwind CSS for NProgress Glow effect?
            Asked 2021-Dec-10 at 06:12

            I want to make a glow effect on the progress bar near the end like https://codepen.io/brundolf/pen/YWEgLJ

            I am using NProgress. This is the CSS used to create glow effect:

            ...

            ANSWER

            Answered 2021-Jul-25 at 12:30

            Do you want to reuse this later on? If not, why would you even want to convert it to tailwind? Leave it in css.

            Anyway, to make tailwind class you need to add this shadow to config, like that:

            Source https://stackoverflow.com/questions/68515538

            QUESTION

            Override Matplotlib pie chart percentage labels to a specific value that doesn't sum to 100%
            Asked 2021-Nov-23 at 14:37

            I have a pie chart given by the following code

            ...

            ANSWER

            Answered 2021-Nov-23 at 13:59

            You can actually redefine the label to whatever you want:

            Source https://stackoverflow.com/questions/70081942

            QUESTION

            Accessing one crate through another in Rust
            Asked 2021-Nov-06 at 21:23

            I want to port in serde_json through cucumber. gherkin_rust v0.10.1 lists it under "[build-dependencies]". How do I access it without adding it to the toml file / using an extern crate call?

            ...

            ANSWER

            Answered 2021-Nov-06 at 20:51

            You can not access to it through another crate unless that other crate reexports it publicly (ex pub use::cool_crate).

            Just add whatever you need to your Cargo.toml. Notice that dependencies are not used more than once, so there should not be any difference but the usage through namespacing.

            Source https://stackoverflow.com/questions/69861745

            QUESTION

            Pegjs Expected [0-9.] or end of input but "a" found
            Asked 2021-Oct-18 at 15:19

            I want to handle string starts with number using pegjs. When I input with 1abcd it throws Expected [0-9.] or end of input but "a" found.. The expected output is { item: '1abcd', case: '=' }. What changes do I need?

            ...

            ANSWER

            Answered 2021-Oct-18 at 15:19

            Since NUMBER matches the first character, you'll want to use a negative lookahead for STRING before returning a successful match. That way, if a STRING character is encountered, the NUMBER rule will fail and the second alternation of start will be used.

            Here's an example, although as @thinkgruen has written, you'll probably want to try to parse floats less loosely as well.

            Source https://stackoverflow.com/questions/69432970

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

            Vulnerabilities

            No vulnerabilities reported

            Install peg

            Install PEG using [Composer](https://getcomposer.org/download/):.

            Support

            Whether it’s just a reference, online high-five, bug report or feature proposal, all contributions are welcome. The main project is located at [GitHub](http://github.com/wouterj/peg).
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