kgt | BNF wrangling and railroad diagrams | Parser library
kandi X-RAY | kgt Summary
kandi X-RAY | kgt Summary
Do you want to convert various kinds of BNF to other kinds of BNF? No? Well imagine if you did! This would be the tool for you. Input: Various BNF-like syntaxes Output: Various BNF-like syntaxes, AST dumps, and Railroad Syntax Diagrams. See the /examples directory for grammars in various BNF dialects. These have been collated from various sources and are of various quality. BNF dialects tend to be poorly specified, and these examples are an attempt to keep a corpus of known-good examples for each dialect. kgt can't parse them all yet.
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QUESTION
How to remove this warning I have this function in my code and showing the following warning !! Does my code work in same way if i remove -?
...ANSWER
Answered 2021-Mar-18 at 03:53You can use ESLint's no-useless-escape
rule, which will suppress warnings when you use escape characters that don't change the string's meaning. Also see this question and its answers.
As a bit of extra info, -
in a regex only has special meaning if it's inside of square brackets [ ]
and otherwise does not need to be escaped. None of the instances in your regex appear to be inside such brackets, so it's safe to say the regex will work the same if you do decide to just remove the escape characters.
QUESTION
I am trying to draw 2D metaballs using WebGL2. I render a bunch of quads with transparent radial gradient and gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
to a separate framebuffer. I then use the resulting texture in a fullscreen quad, where I decide if pixel should be rendered based on it's alpha value like so:
ANSWER
Answered 2021-Jan-03 at 15:45I'm pretty sure the issue the texture your rendering to is 8bits. Switch it to a floating point texture (RGBA32F
) You'll need to check for and enable EXT_color_buffer_float
and OES_texture_float_linear
You say it won't work on mobile but you're using WebGL2 which hasn't shipped on iPhone yet (2021/1/3). As for RGBA32F not being renderable on mobile you could try RGBA16F. You'll have to check for and enable the corresponding extensions, EXT_color_buffer_half_float
and OES_texture_half_float_linear
. Your current code is not checking that the extensions actually exist (I'm assuming that was just to keep the code minimal)
The corruption is that your circle calculation draws alpha < 0 outside the circle but inside the quad. Before that was getting clipped to 0 because of the texture format but now with floating point textures it's not so it affects other circles.
Either discard
if c
<= 0 or clamp so it doesn't go below 0.
Note: you might find coloring faster and more flexible using a ramp texture. example, example2
Also note: It would have been nice if you'd created a more minimal repo. There's no need for the animation to show either issue
Update 2Something else to point out, maybe you already knew this, but, the circle calculation
QUESTION
I am working on Kafka Streams using Spring Cloud Stream. In the message processing application, there may be a chance that it will produce an error. So the message should not be commited and retried again.
My application method -
...ANSWER
Answered 2020-Jun-03 at 19:56Spring Cloud Stream Kafka Streams binder itself does not provide such retrying mechanisms within the execution of your business logic. However, one way to solve this use case may by wrapping your critical call (dao.insert()
in this case) in a RetryTemplate
that you define locally. Here is a possible implementation that retries 10 times with a backoff policy of 1 second. If you are trying this solution out, make sure to extract the RetryTemplate related common code out of your main business logic. I haven't tried this, but it should work.
QUESTION
I´m working in a website with html, css and js. The project has the usual structure. Several html files (Index.html, Footer.html, Whatsapp.html, ...), styles.css and app.js.
I have Index.html file. In the
ANSWER
Answered 2020-Apr-22 at 17:50JQuery will try and load the scripts included in the HTML files that you're requesting. Is there a reason why you're including them that way?
Remove all the external script tags and css files from the html partials, or use a different method to include the html partials.
Also, those partials don't need to have or tags, best case scenario they get ignored, worse case, they affect the way that the browser reads the document and creates unexpected behavior.
QUESTION
I am working on a website and a part of it involves interpreting whether the website is opened on a mobile or a desktop. I am using client side User agent string for this purpose. I update the inner HTML of one of my elements based on whether the website is opened on mobile or a desktop. I have taken the function from http://detectmobilebrowsers.com/
JavaScript code
...ANSWER
Answered 2020-Feb-19 at 06:04It is because your function executed before DOM fully loaded.
Write function in $(document).ready()
QUESTION
I have two columns called "FirstName" and "LastName" in my dataframe, how can I concatenate this two columns into one.
...ANSWER
Answered 2020-Feb-05 at 06:22from pyspark.sql import functions as F
df = df.withColumn('FullName', F.concat(F.col('First_name'), F.col('last_name')))
QUESTION
I need precise function to detect mobile platform (mobile and tablets).
There are 2 awesome answers about that:
But first solution, which is based on http://detectmobilebrowsers.com/ does not work in all cases. For example it doesn't recognize Motorola Moto Z
as mobile platform:
ANSWER
Answered 2019-Sep-27 at 20:53Have you looked at is.js? One of its features is mobile device detection. Example:
QUESTION
I have a local HTML website and when I try to open it as local site it's going to an online website, I search everywhere but I can't find the problem, my guess is this Javascript code
...ANSWER
Answered 2019-Sep-12 at 12:09Your intuition was right, the script does it.
to unpack it, I just replaced return p
by console.log(p)
and ran it in a developper tool console of a blank page.
The part concerning location
is this one:
QUESTION
I'm using a string tokenizer code as below - had it from my earlier question. It works fine without the QUALIFIER but soon as I add QUALIFIER KGT (schema name) to it - I get an error:
...THE CLAUSES ARE MUTUALLY EXCLUSIVE. SQLCODE=-628, SQLSTATE=42613, DRIVER=4.17.36 SQL Code: -628, SQL State: 42613
ANSWER
Answered 2019-May-23 at 16:25DB2 for IBM i doesn't support such an XPATH syntax.
This works on Db2 for LUW, but not on DB2 for IBM i.
QUALIFIER
keyword is not referenced as allowed in the CREATE FUNCTION
statement on both these DB2 versions.
QUESTION
ANSWER
Answered 2019-Apr-26 at 12:41I don't see any namespace in your classes? Can you add how the classes map to the filesystem? There is a PHP-standard called PSR-4 which is commonly used. If this does not meet your requirements, composer offers a few alternative autoloading options that you can specify in your plugin's composer.json.
See: https://getcomposer.org/doc/04-schema.md#autoload
For example if your plugin only consists of this one AppHelper class that is kept in a file src/AppHelper.php
and the abstract base class you could just add a classmap with those 2 files to your composer.json:
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