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Is it possible to make mqtt webpage without websocket?

I am trying to build a simple webpage that connects to a mqtt broker and updates some information. Is it possible ... , is it safer or better? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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onload - Jquery plugin working in JSfiidle and not in my page

There is something i am missing on this jquery plugin which works in jsfiddle and not in my page. This is a ... modify the file for my browser? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - SQL query not updating database

my database is not updating and not displaying any errors, anyone ? i already set the $id and all the variables but ... ='submitted' /> </form> See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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android - How to put an icon to system status bar with Cordova

I need to put an app icon to the system status bar (on top) on iOS and Android with Cordova (like the ... ). Is there any plugin available? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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assembly - How to force IAR to use desired Cortex-M0+ instructions (optimization will be disabled for this func.)

I need to force IAR tp use certain Cortex-M0+ instruction in some part of my code while codding with C. Please ... before or has anyone an idea? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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jquery - Loading googlemaps on page load

Hi iam trying to load googlemaps when the new page is loaded ..but itz not working below is my code <script ... or js..Any help is appreciated See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Trouble with identifying why the IDE is saying undeclared identifier in C++

I have a class at the moment with these lines of code. What I am struggling with is the function write in ... of the code with the Template. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - Reversing order in incrementing digits

I have a list of numbers, and I'm trying to do the following in a way as efficient as possible. For each consecutively ... ,2,45,4,12,10,5,1] See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - Cropping a JPG without loading all of it in memory

How can I crop a big JPG and extract a small portion of it? The problem is main JPGs are so big and I ... C# method instead of a standalone exe. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c - strcpy causing Thread 1: signal SIGABRT

I'm just doing some practice code but I can't figure out this stubborn Thread 1: signal SIGABRT error. int main(){ ... . ", diet); return 0; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - JSON.net Generating a lot of extra Square brackets

I am trying to generate the following json with JSON.Net but it is adding alot of extra square brackets with what ... ().PersonBirthDate) )))); See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to access Local variables of functions when the function call has finished in python?

I found on the net that local variables of functions can't be accessed from outside when the function call has finished ... 21, in prod if n See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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dart - How to send image over socket connection?

I have been trying to send image over socket connection from client to server which will be saved on the server ... Faulty image on server-side: See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - Laravel - Could not move the file

I'm trying to upload a file but, I getting this error : Could not move the file. My code: $directory = ... folder with the file name. Thank you See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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facebook - Have a "apprequests" notification redirect to a website

I have the FB request dialog (http://developers.facebook.com/docs/reference/dialogs/requests/) setup so my users can ... of a FB page/app. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How can i display a table with two foreign keys in laravel

I have 3 tables Users ------------- user_id (PK) user_name Items_distributed ------------- user_id (FK) ... '))!!}</td> </tr> @endforeach See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Bouncing draggable ball

I have this draggable ball when you drag and release, it is going the oposite way. How can I make this bounce from the ... 20) + "px"; } }) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Cannot load files from angular app deployed on Apache server

I want to create an Angular app which is run on Apache server. Locally from npm start it's running well but ... .woff AddType font/woff2 .woff2 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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html - How can I make the entire image clickable on my wordpress.org site?

Right now my posts can only be clicked by clicking the title, but I would love for the entire image to link to ... link, but it did not work. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to implement sqlite "like" query in android firebase-database

I am trying to implement sqlite like query in firebase database. For e.g. If there are 10 entries abc1, ... but still stuck. Kindly suggest. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - html 'input = multiple' count number of selected files

I have a multiple file input like this: <input multiple="multiple" type="file" name="file"> When I ... question doesn't seem overly specific. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - adding and remove classes on click events

I am working on a click event, which intially is pretty standard. on.click: Remove the active class from all ... https://jsfiddle.net/v7b8cbj5/ See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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scope - Javascript Variable not passing through ocanvas function and for loop

I'm having an issue with a variable not being passed through an ocanvas function. it appears that the variable ... .y += sonicSpeed2; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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vb6 - How to select just one item from listview

Using Listview with Checkbox ListView checkbox id 001 002 003 ... I want to select only one id at a time, ... a messagebox "002 is Selected" See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Where did Python borrow the concept of descriptor from?

Where did Python borrow the concept of descriptor from? Did Python borrow it from some other programming ... of learning Python directly? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Unable to alter JSON variable within a function

Altering a JSON variable is failing for following snippet: var data = {status: ''}; rosconnection.setOnOpen( ... the functions with success. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - Vue Props values not passed in simple test

I'm new using VUE and I was testing a simple vue-router but props are not working in this test. Here the ... the router link in prop HTML code? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Android build gradle failing, Error app:transformClassesWithMultidexlistForDebug'

Error Log Error:Execution failed for task ':app:transformClassesWithMultidexlistForDebug'. java.io.IOException: Can' ... and rebuilding. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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