pigeon | Command pigeon generates parsers in Go from a PEG grammar | Parser library
kandi X-RAY | pigeon Summary
kandi X-RAY | pigeon Summary
The pigeon command generates parsers based on a parsing expression grammar (PEG). Its grammar and syntax is inspired by the PEG.js project, while the implementation is loosely based on the parsing expression grammar for C# 3.0 article. It parses Unicode text encoded in UTF-8. See the godoc page for detailed usage. Also have a look at the Pigeon Wiki for additional information about Pigeon and PEG in general.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of pigeon
pigeon Key Features
pigeon Examples and Code Snippets
def pigeon_sort(array: list[int]) -> list[int]:
"""
Implementation of pigeon hole sort algorithm
:param array: Collection of comparable items
:return: Collection sorted in ascending order
>>> pigeon_sort([0, 5, 3, 2, 2
Community Discussions
Trending Discussions on pigeon
QUESTION
I have this script and I would like to print a single title before executing the conditional if
My code
...ANSWER
Answered 2021-Dec-27 at 16:05Since there was no input example, I used your "Output I have" as input.
I also checked if the whole line contains the word terror or bird, but you can change it if you need the column where it is.
QUESTION
How can I specify a type in Pigeon to be a Map (e.g. Map
), and preferably a Map with dynamic value types (Map
. I can't know for sure what type the data
values are until the push message is sent.
I've tried to define a class using:
...ANSWER
Answered 2021-Dec-14 at 10:06QUESTION
I am creating a game where the player moves between cells using the arrow keys View Game Here. I've gotten the player to move left/right using the arrow keys however, the Up & Down Arrow keys aren't working and return this error when I run the code:
...ANSWER
Answered 2021-Oct-24 at 03:44I played around with the code for a bit and got something that worked. My initial suggestion is going to be that you shouldn't try doing left and right with vanilla javaScript and the up and down with jQuery. I used jQuery to get this to work, but it can certainly be done with vanilla javaScript as well.
The first thing that I did was make a global variable n
that keeps track of our position in the grid, so when you press the left or right arrow it either adds 1 or subtracts 1 from n
, and up and down arrows either adds or subtracts 25.
For each of our little if statements I've made them a bit more generic. First it selects the current div that the player is in, and using the .html()
function in jQuery grabs the HTML (as a string) which we can then use. I noticed that in your initial code when you were trying to add the player variable with .append()
you got an error about string literals. Since the selection of player was a jQuery object it wasn't able to append that since .append()
takes in a string (aka "Hello, World!"). Secondly, when we get the response from .html()
(which is a string), we are then able to append it to a new position in the grid. Doing this means we're moving positions so n
needs to be changed as I stated above. Note that I also used .empty()
to clear the player from the previous block. Finally, we can append player
which would look something like
QUESTION
So I'm a beginner looking to style html tables I'm using with CSS for an epub3 I'm creating. I'm trying to stack multiple tables after each other without margin but insert a margin between the group of tables and p elements. Any help would be appreciated.
I've gotten the tables to function as I want but can't get them to have a margin between the tables and the following paragraphs. I'm writing the tables in html as part of a markdown document.
...ANSWER
Answered 2021-Oct-08 at 19:21In HTML file add this div with class as parent element of tables
QUESTION
Might sounds like a duplicate question, but it is slightly different than what I have found here. I have the following pandas DF (without the new column), and I want to create the new_column
...ANSWER
Answered 2021-Oct-04 at 10:43You can compare valeus for not equal to 0
and create joined values by separator added to columns names, last ncessary split for lists:
QUESTION
My task is to implement a method that could return a correct sublist of anagrams.
Now so far I am having problems with figuring out how can I collect the anagrams in candidates
that match word
and return it.
This is my code for now:
...ANSWER
Answered 2021-Sep-27 at 20:08If two words are anagrams, they have the same numbers of same letters:
QUESTION
I would like to label images within a folder with either yes or no for a machine learning project.
I found this great tool; Pigeon.. https://github.com/agermanidis/pigeon
but the examples provided online requires the user to provide the names of all files within the script. I have not been able to find a way to point the script to a folder instead of including all image names.
Is there a way where you can just provide a link to a folder only.
...ANSWER
Answered 2021-Sep-23 at 13:19I made a for-loop that went through a folder and populated a list with the image names. Then just called the list in place of
QUESTION
When parsing JSON with Go, is it possible to fail if a value is null or missing, without having to check every single field via an if statement? For example:
...ANSWER
Answered 2021-Aug-26 at 08:42No, encoding/json.Unmarshal
will not return an error if the target struct has fields for which the source json does not contain any matching object keys.
QUESTION
I have a pandas dataframe which is similar to the follow but a lot bigger and complicated.
...ANSWER
Answered 2021-Aug-21 at 01:55Here is one way to do it which leverages the built-in next
function and its default
argument:
QUESTION
I read about Dependence Inversion Principle and have seen example as below
There is an interface called IBird
as below
ANSWER
Answered 2021-Aug-15 at 11:29Bottom line of those SOLID principles, is to make the code more understandable, easy to maintain, and easy to scale.
Each solution would work, but think, does it make sense for your code to split those behaviors into two different interfaces?
Or maybe it would be better to create these interfaces:
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