oboe.js | A streaming approach to JSON. Oboe.js speeds up web applications by providing parsed objects before | JSON Processing library
kandi X-RAY | oboe.js Summary
kandi X-RAY | oboe.js Summary
Oboe.js is an open source Javascript library for loading JSON using streaming, combining the convenience of DOM with the speed and fluidity of SAX. It can parse any JSON as a stream, is small enough to be a micro-library, doesn't have dependencies, and doesn't care which other libraries you need it to speak to. We can load trees larger than the available memory. Or we can instantiate classical OOP models from JSON, or completely transform your JSON while it is being read. Oboe makes it really easy to start using json from a response before the ajax request completes. Or even if it never completes.
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oboe.js Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyvoid OboeStreamCallback::onErrorAfterClose(AudioStream *stream, Result result) {
if (result == oboe::Result::ErrorDisconnected) {
LOGI("Restarting AudioStream after disconnect");
soundEngine.restart(); // please check o-- An instrument with a highest pitch is pitched; the others aren't.
pitched :: Instrument -> Bool
pitched = either (const False) (const True) . highestPitch
highestPitch :: Instrument -> Either String Float
highestPitch (Drums (Juoboe('your url').node('!', data=>{
// process your data here.
// the '!' selector means that oboe will just show the data if it is a valid json.
});
cmake_minimum_required(VERSION 3.4.1)
include(ExternalProject)
set(OPUS_ROOT ${Project_BINARY_DIR}/project_opus-prefix/src/project_opus)
ExternalProject_Add(project_opus
URL https://archive.mozilla.org/pub/opus/opus-1.2.1.tar.gz
CONFconst express = require('express');
const app = express();
const PORT = 3000;
const oboe = require('oboe');
const fs = require('fs');
app.get('/download', (req, res) => {
const jsonDataStream = fs.createReadStream('./citylots.jsonCommunity Discussions
Trending Discussions on oboe.js
QUESTION
I see there are not many oboe tags used on SO, but please help if you can, this is more of a general javascript question about handing uncaught errors for undefined. Thanks!~
I am using Oboe.js to stream data to webpage from a MongoDB atlas collection. In the MongoDB JSON, some of the _ids have a path of item.image.filename which is a path to an image. Some do not have item.image.filename, as not all of the streamed items need an image. The loading stops when there is an undefined value and I see an error in the console.
I would expect that if there is not a value present that oboe would just carry on to the next record as its default behavior. However, the _ids without the image path are throwing an exception in the if statement I am using to rule them out. I want to be clear that item.image.filename is not there with no value in it or set to null, it just doesn't exist. From what little I know of MongoDB, the flexibility to have each item be unique is one of its big advantages.
I believe I have hit on all manners of checking for this with if statements, even using a try catch block, but when compiled, the if statement itself is throwing this error: oboe-browser.min.js:5 Uncaught Error: Cannot read property 'filename' of undefined at oboe-browser.min.js:5 . The if else block would render html without the image if undefined, otherwise render it.
One way to fix this would be to add a item.image.filename to each record, but I would rather not, there are a lot of records, that's my last resort. Seems there is a better wait to sort this out.
Here is what I have tried:
if(!item.image.filename)
if(item.image.filename === undefined)
if(item.image.filename == 'undefined')
if(item.image.filename == undefined)
if(item.image.filename === 'undefined')
if(item.image.filename === null)
if(item.image.filename == null)
I took an alternative route like if(item.image.filename !== undefined) both with and without quotes, and with null too.
Thanks for the help!
...ANSWER
Answered 2020-Dec-03 at 01:38try something like this:
QUESTION
I have used async for with great success in handling output streams from processes with node.js, but I'm struggling to get something that I was hoping could "just work" with the browser fetch API.
This works great to async'ly handle chunks of output streaming from a process:
...ANSWER
Answered 2020-May-31 at 19:23I believe the current state of affairs in mid 2020 is that async for does not work on the fetch body yet.
https://github.com/whatwg/streams/issues/778 This issue appears to have tracking bugs for browsers and none of them have the functionality implemented yet.
I don't currently know of another way to make use of the .body ReadableStream provided by fetch.
The standard way to do the task implicit in the question is to use a websocket.
QUESTION
JS:
...ANSWER
Answered 2018-Apr-08 at 10:06You need to call $scope.$apply() at the end of done().
Because the call is async and oboe does not hook into angular's scope framework, angular will not know that the page needs to be re-rendered after you have received the ajax response.
$scope.$apply() tells Angular that the scope has changed and to therefore refresh the page display. This question and answer explains this in more detail.
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