Recent questions

0 votes

208 views

1 answer

I have a data frame with a category column. For each class within the category column, I would like a repeating sequence from 1 to n. For ... 8 b 2 9 b 3 10 b 1 11 b 2 12 b 3...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

211 views

1 answer

javascript - How to move any element (rects, images etc) on a canvas without deletinng all content

How I can move a element inside canvas without deleting all inside content with context.clearRect()? For example: var canvas = ... 600" height="500"></canvas> </body> </html>...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

296 views

1 answer

postgresql - How to get all datasets that match a condition. NOT OUTTER JOIN

I want to get all teams that contain a certain dataset of mitglieder AND all other mitglieder's datasets in those ... group by teams.name, mitglieder.username; Thanks in advance!!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

242 views

1 answer

function - (Python 3) When to use and when not to use Self in classes, how to pass variables from __init__

I am a brand new to coding (a couple weeks) and im writing some code to webscrape some HTML. The majority ... def getInfo(): return UND.getFlightCategory(), UND.getRestrictions()...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

246 views

1 answer

list - Function pointer called with free

I am practicing some programs from a book on Algorithms using C programming. I see the following function: void ... itself? Can someone help me understand this please? Thanks....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

289 views

1 answer

lua - How to rank captain to the first player to join a team roblox studio

I would like to know how I can do in roblox studio so that the first member that joins the blue team (it is not ... that player the captain rank. any idea how to do this? please...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

339 views

1 answer

Janus CPU spikes

Our team is currently working on setting up a WebRTC server based on Janus. We've combined the video room plugin with ... capacity or the way we made our application.) Thank you!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

150 views

1 answer

html - How to position items responsively using css that can't be arranged easily in css grid?

new to development here and have designed a personal portfolio site that has give me a headache (with placeholder images). Home Page ... </div> </section> </main> </body> </html>...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

318 views

1 answer

dataframe - how to find out rows that have one or more values as zero in any column of data set in python

Suppose say I have a dataframe with 20 rows(observations) and 4 columns. Out of 20 rows, 5 rows have zeroes in ... rows have zeroes as values in any column of dataframe in python?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

190 views

1 answer

python - SQL Alchemy - How to use built-in function in PostgreSQL database?

I want put this query into code: select * from st_geomfromtext('POINT(106.69588536141288 10.782847409207672)') Here is ... types. You might need to add explicit type casts....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

262 views

1 answer

sql - Using Composite primary key when indexing Mysql

I am using MySQL 8.0 show index from table1 outputs table Non_unique Key_name Seq_in_index ColumnName ... Collation ... =1 then seq_in_index=2 to use second primary index?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

272 views

1 answer

angular - Typescript Array of Objects not Storing as expected

If you looked a the console results, I have no idea as to why the array of objects is now 235 235 on both indexes, it should ... "235"} {slotId : "235"} length 2 _proto_: Array(0)...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

528 views

1 answer

html - using javascript container blinking and remove and add CSS classes at same time when hover over another child container

I have a problem where I'm making a card photo 1 that contains an invisible child container that has buttons and when mouse over ... h4>The Wolf Of Wall Street</h4> </div> </div>...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

364 views

1 answer

How to scroll using custom scrollbars in android WebView?

I want to use custom ScrollBars in android WebView; and also want to use that scrollbar to scroll WebView content. ... able to scroll the content of WebView by dragging scrollbar....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

809 views

1 answer

powershell - Executing raw shellcode on windows

I swear there was a way to copy paste shell code into CMD or PowerShell and have it execute. I remember making reverse ... now. I'm beginning to question my own sanity. Please help...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

252 views

1 answer

How to do jobs for mongodb with javascript

The database is configured with a Mongo sharding with 3 Shards. (TestSharding). The database is configured with a Mongo sharding ... know how to do a job. Can somebody help me?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

523 views

1 answer

C++: undefined reference to Constructor

I just started working with C++ and am working on an exercise that deals with polymorphic pointers. I'm ... double calculateCircumference() = 0; }; #endif // SHAPE_H_INCLUDED...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

923 views

1 answer

python - ImportError: dynamic module does not define module export function (PyInit_cv_bridge_boost)

When I built my program with catkin build, I got the following error: File "/opt/ros/melodic/lib/python2.7/dist- ... I need to do anything different if I use virtualenv? Thanks!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.1k views

1 answer

vuetify.js - how to change background color and text color of v-select active item

can you please help to change v-select active item text color and background color?. I tried with item-color property changes ... true }" @change="y" outlined dense > </v-select>...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

245 views

1 answer

date - Java 8 DateTimeFormatterBuilder appendValue zeroPadding Not working as expected

I am trying to format the milliseconds to 3 digit on serialize to ISOString from offsetDate Time Value Expected Actual 2020-06- ... -06-16T11:47:40.012Z 020-06-16T11:47:40.120Z...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

315 views

1 answer

android - is it possible to run a macro using mit app inventor?

I am trying to design an app where I would like to call different function on different button. however, I am not sure how ... purpose too, but i dont know how to do that... thanks...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

390 views

1 answer

json - Api call returning error **keyNotFound....**

I am trying to make api call , I am building api in query and parsing it as usual , but I am getting error : ... = locationSubtype self.month = month } } Any help would be amazing!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

226 views

1 answer

google cloud firestore - Angular observable pipe return array

I'm fairly new to Angular 9, and essentially I am wondering how do I return an array of objects from an async ... forEach method to loop through the array in it's docs property....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

226 views

1 answer

html - how can I add border to thead?

I'm working on my project with flask and bootstrap. The problem is, scrolled text pixel popped up above thead. like image below. so I ... </p> {% endif %} </tbody> </table> </div>...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

753 views

1 answer

emacs - Copy on the fly text from browser and send instantaneously to a org document a list?

Basically that: as I copy (Control-C) text from the browser (Chrome), I would like those copied sentences to be sent to ... 2 etc. Any ideas? This would be very useful. Thanks!...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

327 views

1 answer

django - PostgreSQL: How to store and fetch historical SQL data from Azure Data Lakes (ADLS)

I have one single Django web application deployed on Azure with a transactional SQL DB i.e. PostgreSQL. Within the ... Please guide what Azure alternatives may work in this case....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

495 views

1 answer

laravel - How to use select2 in Jquery Dynamic Input Field?

I am using dynamic input field using this plugin https://www.jqueryscript.net/table/duplicate-resort-rows-dynamic.html and for Contact ... ", allowClear: true, cache: true, }); });...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.9k views

1 answer

antd - how to change the color of select in ant-design?

My problem: when I use the ant-design I want to change the color of select when I hover&focus this select menu! but ... ! ant-select-selector:hover{ border-color:1px solid red; }...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags