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dart - Null Error with Flutter Bluetooth Printer

I have this function that should print a receipt with bluetooth printer. It should print some text and ... .com/questions/65905506/null-error-with-flutter-bluetooth-printer...

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WebPack Dev Server does not live reload my second HTML page when changing my SCSS, but live reloads when changing my HTML or JS file

Webpack does not live reload with new compiled SCSS code. It live reloads when I change the HTML. It also live reloads ... -not-live-reload-my-second-html-page-when-changing-my-scs...

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c++ - ESP32 with Rest Api in Cloud Firestore

I'm working with ESP32 with Cloud Firestore. I'm attempting to make a request to get the data from a ... stackoverflow.com/questions/65905624/esp32-with-rest-api-in-cloud-firestore...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Another soap client request is sending to bank over vpn connection with spring web services

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reactjs - React page not rendering after refresh

There is a specific route in my application which is rendering perfectly when I go there by clicking the link from homepage, ... variant="flush"> {product.reviews.map((review) => (...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sharedpreferences - Share strings between 2 android applications

I'm looking to share few strings between 2 android apps. For example, App B wants to know if ... /stackoverflow.com/questions/65904881/share-strings-between-2-android-applications...

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node.js - Unable to scrape the link in <a class="btn _def _i _sm" href="www.page2.com"> using cheerio

Unable to scrape the link from the element below using cheerio const outputFile= 'data.json' const parsedResults =[] const pagelimit ... -a-class-btn-def-i-sm-href-www-page2-com-us...

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python - How to pass a command-line ssh parameter with Paramiko?

I'm trying to migrate from using Popen to directly run a ssh command to using Paramiko instead, because my code ... 65904648/how-to-pass-a-command-line-ssh-parameter-with-paramiko...

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loops - How to edit and save TOML content in Python

I would like to edit a local TOML file and save it again to be used in the same Python script. In this sense ... .com/questions/65905017/how-to-edit-and-save-toml-content-in-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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spring boot - How do I debug a Mono that never completes

I have a Spring Boot application which contains a complex reactive flow (it involves MongoDB and RabbitMQ operations). Most ... /65904851/how-do-i-debug-a-mono-that-never-completes...

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c# - Direct2D (SharpDX) block compressed bitmaps not compressed in memory

I have a few (8-10) large texture atlases (around 8192x8192 saved as BC1 DDS) but they are rather ... /65905637/direct2d-sharpdx-block-compressed-bitmaps-not-compressed-in-memory...

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oop - Can we use instance variable of outer class in inner class or vice in Inner class concept in Python?

class Students: def __init__(self,name,rollno,houseNo,area): self.name=name self.rollno=rollno self.address=self.Address( ... of-outer-class-in-inner-class-or-vice-in-inner-clas...

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amazon rds - Synchronization problems with between WRITER and READER RDS servers

I have a basic structure on AWS that has an Aurora MySQL cluster and two servers, a WRITER (db.t2 ... /65905006/synchronization-problems-with-between-writer-and-reader-rds-servers...

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python - Which python3.6 patch version is used in AWS serverless function runtime environments?

I have a serverless.yml file that specifies Runtime: python3.6 for a serverless function in AWS (Lambda). When ... -patch-version-is-used-in-aws-serverless-function-runtime-environ...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - What's the best option for session management/csurf/Firebase with 3rd party cookies not being allowed in Safari, Chrome on mobile

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python - RREF without Numpy

I got the following code for Reduced Row Echelon Form, but cannot understand the algorithm. Someone please ... :https://stackoverflow.com/questions/65904657/rref-without-numpy...

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installation - unable to install python swagger client using terminal

Trying to install generated swagger client (from https://editor.swagger.io/) and failing miserably. i change ... /65905198/unable-to-install-python-swagger-client-using-terminal...

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node.js - Can`t set headers in socket.io using node js and react

the socket work well but I get undefined when I try console.log my header, I can see the headers but not the ... /65904857/cant-set-headers-in-socket-io-using-node-js-and-react...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP

I'm running a PHP script and continue to receive errors like: Notice: Undefined variable: my_variable_name ... ://stackoverflow.com/questions/65904830/php-laravel-undefined-index...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php - When obtaining data from api get in some instances NULL

I have a problem getting data via api. When the crypto == "BTC" or "LTC", and everything works as it ... questions/65905396/when-obtaining-data-from-api-get-in-some-instances-null...

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Svelte Conditional Component rendering

I have a basic if/else in the app to show either a preloader or a component. {#if preloading ... https://stackoverflow.com/questions/65905277/svelte-conditional-component-rendering...

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Having problems with Microsoft teams new webhook

I had a webhook i was using from my ansible playbook to send notification to one of our Microsoft teams ... .com/questions/65905190/having-problems-with-microsoft-teams-new-webhook...

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python - Create dataframe of relationships per ID (From, To)

I have a sample dataframe: data = {'IDs': ['1', '1', '2', '2', '3', '3', '3', ... :https://stackoverflow.com/questions/65905449/create-dataframe-of-relationships-per-id-from-to...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Parent Class with new object, and new object in Subclass, object/method inheritance Python

Two Classes. I have a new object in the parent class that gives attributes a value, and a calling method that ... -with-new-object-and-new-object-in-subclass-object-method-inherita...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - LibGDX Animation Java to Kotlin

I am trying to convert this LibGDX example on Animation using a sprite sheet from Java to Kotlin Here is ... ://stackoverflow.com/questions/65904913/libgdx-animation-java-to-kotlin...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I get the directory of the current script, in Dart?

I want to know what the script's directory is. I have a command-line Dart script. question from:https://stackoverflow. ... there-a-way-to-get-current-file-or-module-name-in-flutter...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - How do I raise error if the execution of an SQL Query is not completed in specified time in C#?

I'm trying to raise a timeout error in my SQL Server query using c#. I thought a timer would work; however I'm ... error-if-the-execution-of-an-sql-query-is-not-completed-in-specif...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Reading last non-empty cell in row of CSV file with Python

I am trying to get a list of the last value in each row of a csv file using python. The rows all have five ... /65905199/reading-last-non-empty-cell-in-row-of-csv-file-with-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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