OStack Q&A-Knowledge Sharing Community

0 votes

645 views

1 answer

ruby - Why does simple form not show validation error messages in Rails?

The :new view when redirected if validations are not matched and where I'd like to see the error messages: <%= ... /why-does-simple-form-not-show-validation-error-messages-in-rails...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

282 views

1 answer

r - Sum all x-values and subtract by their mean

I am trying to hard code the formula for standard deviation in R (yes, I know there is a function to do this ... .com/questions/65829410/sum-all-x-values-and-subtract-by-their-mean...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

164 views

1 answer

python - How to match use Fuzz with array input

I want to try to get match values from the two arrays I input. I use Fuzzy for that. but I still can ... stackoverflow.com/questions/65839889/how-to-match-use-fuzz-with-array-input...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

303 views

1 answer

javascript - Node.js: how to resolve a circular dependency

I know this question has been asked multiple times, but my case is specific: I have three files, a ... com/questions/65835944/node-js-how-to-resolve-a-circular-dependency...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

200 views

1 answer

python - Rasa installation Requirement Incompatible

I have a laptop with Windows 10 Pro and I'm trying to install Rasa 1.6.0 When I try ... from:https://stackoverflow.com/questions/65601169/rasa-installation-requirement-incompatible...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

162 views

1 answer

c++ - If there is such a function in a variadic template?

for example there is such a template template<class ... Types> void f(Types ... args); f(); // OK: ... com/questions/65935047/if-there-is-such-a-function-in-a-variadic-template...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

270 views

1 answer

NestJS problem with ClassSerializerInterceptor in GraphQL

I'm trying to work with class-transformer and NestJS. I'm building an API based on Mongoose ... .com/questions/65647447/nestjs-problem-with-classserializerinterceptor-in-graphql...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

670 views

1 answer

properties - Can I return a global variable from Function?

Declare a global variable named aCar as an object with no properties. Declare a function named getTransmission that ... /65851552/can-i-return-a-global-variable-from-function...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

219 views

1 answer

How to count number of occurrences of more than one elements in a list using Java 8 Stream or collections framework

If we have an ArrayList in Java, as follows: ArrayList<String> animals = new ArrayList<String>(); animals.add("bat" ... of-occurrences-of-more-than-one-elements-in-a-list-using-jav...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

445 views

1 answer

rust - Lifetimes for generalizing trait implementation from &T to AsRef<T>

I have some problems generalizing a trait working for &str to other string types (e.g. Rc<str>, Box ... /65625748/lifetimes-for-generalizing-trait-implementation-from-t-to-asreft...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

297 views

1 answer

how to remove accents from a string in python

i recently made a test in university and the question was like this-"ask a name,and remove the accents from it ... /questions/65833714/how-to-remove-accents-from-a-string-in-python...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

198 views

1 answer

python - How to get 80% random elements from a list?

I have a list with integers. I want to choose 80% from them. For example, for [1,...,30] I want ... stackoverflow.com/questions/65905051/how-to-get-80-random-elements-from-a-list...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

301 views

1 answer

php - Add created date timestamp to WooCommerce customer emails

I'm trying to add order time next to the date on the Thank you screen and in the default ... /questions/65941288/add-created-date-timestamp-to-woocommerce-customer-emails...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

Python/MySQL query error: `Unknown column`

This script is meant to act as a command-line front-end to add records to a locally hosted MySQL database. I ... /65932515/how-to-resolve-unknown-column-letters-in-field-list-error...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

235 views

1 answer

Create HTML list from object in localstorage javascript

I'm pretty new to javascript and I'm trying to create a score list to display player scores. Once ... /questions/65648309/create-html-list-from-object-in-localstorage-javascript...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

354 views

1 answer

android - Flutter display nested json in ListView return type String is not a subtype of type 'Map<String, dynamic>' in type cast

I' m going on with my journey in Flutter. I' m able to display a simple json in a ListView. Now I' m trying ... -nested-json-in-listview-return-type-string-is-not-a-subtype-of-t...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

279 views

1 answer

flutter - Do a SetState inmediatly after log in

I want to make a setState everytime the user pass the log in phase. "litems" is a list of items, ... /stackoverflow.com/questions/65895189/do-a-setstate-inmediatly-after-log-in...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

139 views

1 answer

node.js - Problem to use my Callback function in using "For"?

My code: console.log('Start') getMember((member) => { console.log(member) }) console.log('End') function ... com/questions/65540704/problem-to-use-my-callback-function-in-using-for...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

133 views

1 answer

java - Check whether the given number is fasinating or not

I am doing question on geeksforgeeks and i have come up with a question. Given a number N. Your task is ... /questions/65949337/check-whether-the-given-number-is-fasinating-or-not...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

245 views

1 answer

arrays - Multiple select with custom data

I have a form with a multiple select like this:? .form-row__select ? ? ? ? = f.collection_check_boxes( ... ://stackoverflow.com/questions/65941518/multiple-select-with-custom-data...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

450 views

1 answer

postgresql - How to write a migration to convert JSON field to Postgres Array for querying in rails?

There is an old table with column type as JSON but only arrays are stored in this column. Even though I am ... a-migration-to-convert-json-field-to-postgres-array-for-querying-in...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

990 views

1 answer

rdf - How to change the tag when creating a class

so, when someone creates a subclass of something in Protegé, this is what comes out of It: :Wedding rdf:type owl ... /questions/65834033/how-to-change-the-tag-when-creating-a-class...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

143 views

1 answer

android - In my project I want to check that the textview is containing text or not

Closed. This question needs debugging details. It is not currently accepting answers. question from:https://stackoverflow. ... to-check-that-the-textview-is-containing-text-or-not...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

318 views

1 answer

pine script - How to apply formula to several securities

I would like to apply the below to several securities. The end product would display 3 lines showing ... com/questions/65858641/how-to-apply-formula-to-several-securities...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

177 views

1 answer

c - Write BMP image

I'm currently learning C and I started to write a BMP image reader and writer, to make some operations ... from:https://stackoverflow.com/questions/65840161/write-bmp-image...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

293 views

1 answer

batch file - Random numbers are the same when used in the FOR command

This question already has an answer here: question from:https://stackoverflow.com/questions/65878053/random-numbers-are-the-same-when-used-in-the-for-command...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

686 views

1 answer

flutter - The current Dart SDK version is 2.10.4. how can I change the version into a upper version .? In a beta or dev channel

Because classbe depends on cupertino_icons >=1.0.1 which requires SDK version >=2.12.0-0 <3.0.0, version solving failed. ... -is-2-10-4-how-can-i-change-the-version-into-a-uppe...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

190 views

1 answer

python - Scraping other elements from a tag in Selenium

The script on the webpage reads: <td class="bc bs o" data-bk="B3" data-odig="7.5" data-o=" ... //stackoverflow.com/questions/65919837/scraping-other-elements-from-a-tag-in-selenium...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Recent questions

Just Browsing Browsing

Most popular tags