hedgehog | Concise implementation of a lisp-like language | Interpreter library
kandi X-RAY | hedgehog Summary
kandi X-RAY | hedgehog Summary
hedgehog is a very concise implementation of a lisp-like language for low-end and embedded devices, primarily for machine-to-machine systems. it consists of a compiler to byte code and a corresponding interpreter. the byte code interpreter is written in standard conforming c, is efficient and easily portable, and can be compiled to a very small executable or library of only some 20-30 kilobytes. the hedgehog lisp dialect has proper support for local and lambda functions, lexical scoping, variable argument functions, garbage collection, exceptions, macros, and over a hundred predefined functions or special forms. the built-in types are lists, symbols, strings, 32-bit integers, avl-trees, and tuples up to 16 elements wide. proper 32-bit wide integers are necessary for various bit-level operations in embedded systems. the hedgehog compiler and byte code interpreter, essentially all code written in c, is distributed under the "lesser" gnu general public license (gpl). in layman's terms, you have to ship the source code of the hedgehog compiler and interpreter whenever you ship the corresponding binary executable. however, all files written in hedgehog lisp itself, including the standard library in the prelude.d directory, are distributed the revised bsd license, which allows them to be included also in programs that are distributed without full source
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Trending Discussions on hedgehog
QUESTION
I am working on an asp.net core mvc project (.net 5) but struggling hard with Identity related things.
I have a class HedgehogUserAccount that inherits from IdentityUser with two other classes that inherit from HedgehogUserAccount: CustomerAccount and UserAccount (bad choice of name, I know - I will change it when everything works). After a lot of work, I have managed to get the migrations to work and the program compiles and runs, but when I try to register a User I get the following error:
NotSupportedException: No IUserTwoFactorTokenProvider named 'Default' is registered.
The error comes from line 90 in my registration code (see full code pasted below - it is almost the same as the scaffolded registration page):
var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
The relevant (I think) part of my Startup.cs looks like this:
...ANSWER
Answered 2021-May-04 at 10:31After a lot of headaches, I have now reached a conclusion to my problem. I solved it by implementing my own token provider and registering it with the system. In case anyone else crashes into the same wall as I did, I leave my solution here.
Step 1: Implement IUserTwoFactorTokenProvider
QUESTION
My dilemma: everything compiles correctly and the django server runs well; however, the developer tools reveal the same errors. NOTE: There are other similar posts on stack overflow and github; however, I have read through all of them and tried each of the suggested answers, to no avail! Here is a screenshot of my error:
My project is a react/django project, so I currently have a file called "DataGetching.js" that pulls info from the api that I am trying to display on the screen by calling this component in my App.js. I am trying to do this while also implementing a navbar in App.js to try and get a feel for interaction between api and react components, as I grow as a developer. Here are my App.js, webpack, index.js, index.html, DataFetching.js, my file structure, and package.json.
App.js:
...ANSWER
Answered 2021-Apr-15 at 17:32There are a few things that need to be changed. Changed the import line for each svg to
import BellIcon from './icons/bell.svg';
Then, in the webpack, change to:
QUESTION
I have a react/django app. In my app.js, I am testing out the ability to pull & render JSONs from my API, but at the same time be able to render react components. My app.js consists of an App class component that refers to Navbar and Navitems that are function components. I also refer to icons that I have saved as word.svg in an icons folder. I am going to include the error messages in dev tools, code for arrow.svg in icon folder, and my App.js folder.
Error:
...ANSWER
Answered 2021-Apr-15 at 07:47Specify key attribute for the enclosing div. Key in li element is redundant:
QUESTION
I successfully get the data from this table from THRIVEN :
But as you can see, at the Net% column, those values negative/positive are determined by some CSS (which I believed, and I couldn't find them where they are located).
How can I extract those data and put them into my Excel as negative/positive numbers? Below is my current code :
...ANSWER
Answered 2021-Mar-01 at 08:35Check the class of the button to differentiate positive or negative value:
QUESTION
UPDATE: HedgeHog's answer worked. To overcome the numpy issue, I uninstalled numpy-1.19.4 and installed the previous version numpy-1.19.3.
[Python 3.9.0 and BeautifulSoup 4.9.0.]
I am trying to use the BeautifulSoup library in Python to parse the HTML table found on the Department of Justice's Office of Legal Counsel website, and write the data to a CSV file. The table can be found at https://www.justice.gov/olc/opinions?keys=&items_per_page=40.
The table is deeply nested within 11
ANSWER
Answered 2021-Jan-21 at 20:15pandas
Always ask yourself - Is there an easier way to get my goals?
It is, you can simply use pandas to do it in two lines. In your case it do all the things for you.
- Requesting the url
- Searching for the table and scraping the contents
- Push the results to an csv
I also try to go through your question and may answer to it.
Example
QUESTION
Hi I'm new to pyspark and I'm trying to convert pyspark.sql.dataframe into list of dictionaries.
Below is my dataframe, the type is :
...ANSWER
Answered 2020-Nov-29 at 12:38You can map each row into a dictionary and collect the results:
df.rdd.map(lambda row: row.asDict()).collect()
QUESTION
Heres the link to the w3 page https://www.w3schools.com/howto/howto_css_modal_images.asp, and all the changes made is only in the javascript. Note that the one in the w3 page isnt working so i had to find a solution from this page and found this https://jsfiddle.net/snowMonkey/f1zav0ge/ and i took only the javascript code from here, and both still doesnt work
Heres the html:
...ANSWER
Answered 2020-Dec-06 at 08:26Currently, the close button on the modal window remains below the navigation and therefore cannot be clicked. In order to be able to close the modal it is necessary to make these two changes in CSS:
On style header set z-index: 10;
On style .modal set z-index: 11;
This change he made so that when the modal window opens it will stand above the navigation and the "close" button can be clicked.
QUESTION
I have the following user configuration:
...ANSWER
Answered 2020-Nov-05 at 00:58Your bucket policy should be like this:
QUESTION
This is my array from a webservices.
...ANSWER
Answered 2020-Oct-19 at 16:42Easiest tweak would be to use optional chaining, to only call toLowerCase if the key exists:
QUESTION
ok so i used an api and arranged a text file that looks like this:
...ANSWER
Answered 2020-Oct-04 at 13:28You can use here numpy.where to find value and pandas loc to print row
Code:
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