Node | Node.js 学习之旅 - Node | Runtime Evironment library

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kandi X-RAY | Node Summary

Node is a JavaScript library typically used in Server, Runtime Evironment, Nodejs, NPM applications. Node has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Node.js 学习之旅

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Support

Node has a low active ecosystem.

It has 174 star(s) with 1 fork(s). There are no watchers for this library.

It had no major release in the last 6 months.

Node has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of Node is current.

Quality

Node has 0 bugs and 0 code smells.

Security

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

Node code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

Node 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.

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Node Key Features

No Key Features are available at this moment for Node.

Node Examples and Code Snippets

Get node names .

python

Lines of Code : 27

License : Non-SPDX (Apache License 2.0)

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def node_names(self):
    """Lazily creates a mapping from node id to ("path", "to", "root")."""
    if self._node_name_cache is not None:
      return self._node_name_cache
    path_to_root = {}
    path_to_root[0] = ("(root)",)
    to_visit = colle

Returns the device associated with a node .

python

Lines of Code : 26

License : Non-SPDX (Apache License 2.0)

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def node_device(self, node_name):
    """Get the names of the devices that has nodes of the specified name.

    Args:
      node_name: (`str`) name of the node.

    Returns:
      (`str` or `list` of `str`) name of the device(s) on which the node o

Return a list of child node IDs .

python

Lines of Code : 23

License : Non-SPDX (Apache License 2.0)

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def _get_child_layer_node_ids(self, node_id):
    """Returns the node ids of each layer in a Sequential/Functional model."""
    # Sequential and Functional track layers with names following the format
    # "layer-N". Use this to generate the list o

Community Discussions

Trending Discussions on Node

how to get jstree instance from iframe source?

typescript throws configure not a function error with dotenv and jest

(node:4044) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'cache' of undefined

Modifying private pointer of object within same type (but different object) public method

General approach to parsing text with special characters from PDF using Tesseract?

How to fix the problem of pm2 using netmask 1.0.6 causing an high level threat

Call a method on click on a node on cytoscape graph

Node Environment variable ignored by testing library

Check Graph Reciprocity using Pandas

JavaScript recursive function to parse complex JSON object/array

QUESTION

how to get jstree instance from iframe source?

Asked 2021-Jun-16 at 03:07

I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);.

...

ANSWER

Answered 2021-Jun-16 at 03:07

I had used document.getElementById('1').contentWindow.jQuery('#left').jstree(true); to get instance from iframe with id='1'. In order to listen to right iframe(with id='2') if any menu has been clicked, I used document.getElementById('2').contentWindow.jQuery('#right').on("changed.jstree",function(e,data){}). I get the instance of left iframe within this function. By using this instance, I has deselect previous selection, select current selection, and open children of selected menu.

index-12.html

Source https://stackoverflow.com/questions/67933193

QUESTION

typescript throws configure not a function error with dotenv and jest

Asked 2021-Jun-16 at 00:40

I am trying to use dotenv and jest together, and run into an error immediately.

A single test file, tests/authenticationt.test.ts with only

...

ANSWER

Answered 2021-Jun-16 at 00:40

try require('dotenv').config()

Source https://stackoverflow.com/questions/67994907

QUESTION

(node:4044) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'cache' of undefined

Asked 2021-Jun-15 at 20:22

I sort of need help here, honestly not sure where I went wrong, here is the full code. I am sort of new, just trying to bring back the mention user and the reason back in a message instead of doing anything with this information.

...

ANSWER

Answered 2021-Jun-15 at 17:58

Why are you calling client in a command file if you already started a new instance of a client in your root file? try removing client from the top of the code. Hope that works

Source https://stackoverflow.com/questions/67991046

QUESTION

Modifying private pointer of object within same type (but different object) public method

Asked 2021-Jun-15 at 20:20

I've been attempting to create a node class which mimics a node on a graph. Currently, storage of the predecessor and successor nodes are stored via a node pointer vector: std::vector previous. The vectors for the predecessor/successor nodes are private variables and are accessible via setters/getters.

Currently, I am dealing with updating the pointer values when adding a new node. My current method to update the predecessor/successor nodes is through this method (the method is the same for successor/previous nodes, just name changes):

...

ANSWER

Answered 2021-Jun-15 at 20:20

I think this should get you going (edge-cases left to you to figure out, if any):

Source https://stackoverflow.com/questions/67991595

QUESTION

General approach to parsing text with special characters from PDF using Tesseract?

Asked 2021-Jun-15 at 20:17

I would like to extract the definitions from the book The Navajo Language: A Grammar and Colloquial Dictionary by Young and Morgan. They look like this (very blurry):

I tried running it through the Google Cloud Vision API, and got decent results, but it doesn't know what to do with these "special" letters with accent marks on them, or the curls and lines on/through them. And because of the blurryness (there are no alternative sources of the PDF), it gets a lot of them wrong. So I'm thinking of doing it from scratch in Tesseract. Note the term is bold and the definition is not bold.

How can I use Node.js and Tesseract to get basically an array of JSON objects sort of like this:

...

ANSWER

Answered 2021-Jun-15 at 20:17

Tesseract takes a lang variable that you can expand to include different languages if they're installed. I've used the UB Mannheim (https://github.com/UB-Mannheim/tesseract/wiki) installation which includes a ton of languages supported.

To get better and more accurate results, the best thing to do is to process the image before handing it to Tesseract. Set a white/black threshold so that you have black text on white background with no shading. I'm not sure how to do this in Node, but I've done it with Python's OpenCV library.

If that font doesn't get you decent results with the out of the box, then you'll want to train your own, yes. This blog post walks through the process in great detail: https://towardsdatascience.com/simple-ocr-with-tesseract-a4341e4564b6. It revolves around using the jTessBoxEditor to hand-label the objects detected in the images you're using.

Edit: In brief, the process to train your own:

Install jTessBoxEditor (https://sourceforge.net/projects/vietocr/files/jTessBoxEditor/). Requires Java Runtime installed as well.
Collect your training images. They want to be .tiffs. I found I got fairly accurate results with not a whole lot of images that had a good sample of all the characters I wanted to detect. Maybe 30/40 images. It's tedious, so you don't want to do TOO many, but need enough in order to get a good sampling.
Use jTessBoxEditor to merge all the images into a single .tiff
Create a training label file (.box)j. This is done with Tesseract itself. tesseract your_language.font.exp0.tif your_language.font.exp0 makebox
Now you can open the box file in jTessBoxEditor and you'll see how/where it detected the characters. Bounding boxes and what character it saw. The tedious part: Hand fix all the bounding boxes and characters to accurately represent what is in the images. Not joking, it's tedious. Slap some tv episodes up and just churn through it.
Train the tesseract model itself

save a file: font_properties who's content is font 0 0 0 0 0
run the following commands:

tesseract num.font.exp0.tif font_name.font.exp0 nobatch box.train

unicharset_extractor font_name.font.exp0.box

shapeclustering -F font_properties -U unicharset -O font_name.unicharset font_name.font.exp0.tr

mftraining -F font_properties -U unicharset -O font_name.unicharset font_name.font.exp0.tr

cntraining font_name.font.exp0.tr

You should, in there close to the end see some output that looks like this:

Master shape_table:Number of shapes = 10 max unichars = 1 number with multiple unichars = 0

That number of shapes should roughly be the number of characters present in all the image files you've provided.

If it went well, you should have 4 files created: inttemp normproto pffmtable shapetable. Rename them all with the prefix of your_language from before. So e.g. your_language.inttemp etc.

Then run:

combine_tessdata your_language

The file: your_language.traineddata is the model. Copy that into your Tesseract's data folder. On Windows, it'll be like: C:\Program Files x86\tesseract\4.0\tessdata and on Linux it's probably something like /usr/shared/tesseract/4.0/tessdata.

Then when you run Tesseract, you'll pass the lang=your_language. I found best results when I still passed an existing language as well, so like for my stuff it was still English I was grabbing, just funny fonts. So I still wanted the English as well, so I'd pass: lang=your_language+eng.

Source https://stackoverflow.com/questions/67991718

QUESTION

How to fix the problem of pm2 using netmask 1.0.6 causing an high level threat

Asked 2021-Jun-15 at 19:25

I was working on my project and was using pm2-runtime command for the runtime environment but the problem coming in my terminal while running the command npm i gives 2 level warnings that are

...

ANSWER

Answered 2021-Apr-01 at 10:22

Install latest PM2 version:

Source https://stackoverflow.com/questions/66887286

QUESTION

Call a method on click on a node on cytoscape graph

Asked 2021-Jun-15 at 19:20

I am trying to call a method by passing in the id of the node but it keeps saying that method is not a function.

Here is the stackblitz link: https://stackblitz.com/edit/cytoscape-call-method?file=src/app/app.component.ts

You can click on any node and see the console error. It says this.showId is not a function.

Some code

...

ANSWER

Answered 2021-Jun-15 at 19:20

Hm I think I see what you mean. It's about scopes in JS. Try below

Source https://stackoverflow.com/questions/67976009

QUESTION

Node Environment variable ignored by testing library

Asked 2021-Jun-15 at 19:16

I'm implementing Testing Library with Puppeteer and I was trying to use an environment variable, DEBUG_PRINT_LIMIT, to limit the length of the HTML printed to console in case of failure.

But for some reasons, the variable environment is just ignored by the library...

My project:

package.json

...

ANSWER

Answered 2021-Jun-15 at 19:16

If finally figured it out.

It's actually a bug in the library itself: https://github.com/testing-library/pptr-testing-library/issues/55

Source https://stackoverflow.com/questions/67448502

QUESTION

Check Graph Reciprocity using Pandas

Asked 2021-Jun-15 at 18:22

I have a Graph loaded in pandas and I want to check if my graph has nodes with reciprocity. My dataset looks like this:

id from to 0 s01 s03 1 s02 s01 2 s03 s01

The desired output of my code is the reciprocal nodes: (s01, s03)

I found a solution transforming my dataframe into tuples and comparing each combination of my nodes, but I'm sure this solution is far from ideal. Following is my code:

...

ANSWER

Answered 2021-Jun-15 at 18:22

You can merge the DataFrame with itself after swapping the from and to columns in the right DataFrame. Then sort the merged result and drop duplicates to get the unique pairs of reciprocal nodes.

Source https://stackoverflow.com/questions/67991543

QUESTION

JavaScript recursive function to parse complex JSON object/array

Asked 2021-Jun-15 at 17:13

I have a JSON response like this:

...

ANSWER

Answered 2021-Apr-13 at 02:25

I guess there is something better,

Source https://stackoverflow.com/questions/67067782

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

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