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User Help

Windows won’t let me use fingerprint

I have been having this problem for a very long time, only now have I decided to try to resolve it. Image When trying to access the fingerprint settings, I come across this error, as shown on the image. I am running Windows version 1909, OS Build 18363.1198. Any help is appreciated, thanks in advance.

Categories
Linux Mastering Development

Compiling C on Manjaro

First of all, I’m pretty new to the whole Linux world so sorry if this question may seem stupid. I’m currently studying informatics and telecommunications, I tried Linux for the first time about 2 months ago and I’m enjoying it. There’s just one problem: I have to deliver on Google Classroom some C exercises that […]

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Arduino Ask Engineering

How to send Serial data from an Arduino Uno into the Serial of an ESP-01?

So, i need to send sound sensor data from an Arduino Uno to the ESP8266 (ESP-01), so it can output a push notification to my phone whenever there’s a loud noise. I have the sensor just powered and hooked up to the Analog 0 pin, and the ESP powered and hooked up to the Arduino […]

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Mastering Development

how to recieve data from BLE in flutter between esp32 and flutter app

I want to receive data packets from ESP32 and the ESP32 is working properly(I tested it using BLE scanner) but when I want to receive data on my own app, i receive the following data: I/flutter (23252): The received Value is ESP32 GET NOTI FROM DEVICE I/flutter (23252): The received Value is I/flutter (23252): The […]

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Mastering Development

How to use Observable inside http request Url?

I am having trouble using an Observable value inside an HTTP get request. First I have a service that fetches the user setting which triggers if the user is authenticated and when different settings are applied. private userSettings: BehaviorSubject<UserSettingDto> = new BehaviorSubject<UserSettingDto(null); userSettings$ = this.userSettings.asObservable(); loadUserSettings() { return this.http.get<any>(“).toPromise().then( data => { this.userSettings.next(data); }); } […]

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CMS Drupal Mastering Development

Why is my view showing multiple rows despite setting multiple values to display in same row?

I am using Drupal 8 and have a simple data model that relates Content types of Children, Parents, and Family. The Family content type aggregates Children and up to 2 Parents with entity relationship fields: I am trying to create a view that displays 1 row per child and lists any parent names in the […]

Categories
Cryptocurrency Ethereum Mastering Development

TypeError: different number of components either side of equation

I am working on a project using ERC721. Code below pragma solidity >=0.4.21 <0.7.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; contract Sketch is ERC721 { string[] public sketchs; mapping(string => bool) _sketchExists; constructor() ERC721("Sketch", "SKETCH") public { } function mint(string memory _sketch) public { uint _id = sketchs.push(_sketch); _mint(msg.sender, _id); _sketchExists[_sketch] = true; } } But when I truffle […]

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Mastering Development

I want to create a totally seperate window outside of the browser window in react

i want to create a new window outside of the normal browser window to contain chats, i want to be able to open as many windows as there are chats, and display them, freely floating on the users screen even outside the browser. i need to do this Using react and meteor, and i need […]

Categories
Cryptocurrency Ethereum Mastering Development

How to get into “eth.signtransaction”?

I’m not an expert but I really do need step by guide on how or where can I perform this "eth.signTransaction"? The reason I’m asking as I wanted to obtain “DATA” as in (Param) in order for me to fill in and run “eth_sendRawTransaction”. Appreciate your kind guidance accordingly, thanks in advance.

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CMS Magento Mastering Development

How to get Random review in magento 2.4

Need to get random review in magento 2.4 Every time refresh review will be change (as review i have call in homepage) $reviewCollectionFactory = $objectManager->create(‘Magento\Review\Model\ResourceModel\Review\CollectionFactory’)->create(); // Get reviews collection $reviewsCollection = $reviewCollectionFactory->addFieldToSelect(‘*’) ->addStoreFilter($currentStoreId) ->addStatusFilter(\Magento\Review\Model\Review::STATUS_APPROVED) //->setDateOrder() ->addRateVotes() ->load(); if ($reviewsCollection && count($reviewsCollection) > 0) { foreach ($reviewsCollection AS $review) { echo $review->getTitle() . "<br/>"; } } […]