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722 views

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mongodb - Convert string to date in pymongo

Using Community MongoDB 4.4.3, I have a sample test collection: client = pymongo.MongoClient('localhost', ... stackoverflow.com/questions/65873085/convert-string-to-date-in-pymongo...

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

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368 views

1 answer

django drf testing social oauth2 with google

I'm trying to test drf-social-oauth2's integration with Google via python manage.py test with the following ... .com/questions/65873069/django-drf-testing-social-oauth2-with-google...

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

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147 views

1 answer

python - How to find a distance between elements in numpy array?

For example, I have such array z: array([1, 0, 1, 0, 0, 0, 1, 0, 0, 1]) How to find ... /stackoverflow.com/questions/65873043/how-to-find-a-distance-between-elements-in-numpy-array...

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

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138 views

1 answer

r - Speeding up an extremely slow for-loop

This is my first question on stackoverflow, so feel free to criticize the question. For every row in a data ... .com/questions/65873007/speeding-up-an-extremely-slow-for-loop...

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

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61 views

1 answer

python - calculating mass of a word algorithm

I have to write a function that takes in a word only in uppercase and calculate it's mass according ... /stackoverflow.com/questions/65872988/calculating-mass-of-a-word-algorithm...

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

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486 views

1 answer

reactjs - react-router-dom only works on reload, is there any solution or another way to redirect to other pages?

I'm trying to redirect to another page in reactjs with "react-router-dom" and "history" modules. but it changes the ... -works-on-reload-is-there-any-solution-or-another-way-to-r...

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

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73 views

1 answer

How to change JSON data Dynamically from with Javascript

I have an algorithm problem with JSON data to produce what I want. I get some JSON data which I need ... questions/65872964/how-to-change-json-data-dynamically-from-with-javascript...

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

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320 views

1 answer

R and Latex: Metric (TFM) file not found

I am trying to learn how R and Latex work together when combined via sweave in RStudio. I have the latest versions ... .com/questions/65872953/r-and-latex-metric-tfm-file-not-found...

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

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124 views

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r - How to put label on bar plot using ggplot2?

I am beginner in r and I faced to two problems here. I am grateful if anyone can help me. What am I doing ... .com/questions/65872919/how-to-put-label-on-bar-plot-using-ggplot2...

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

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752 views

1 answer

powershell - How to export PostgreSQL query result into csv file using windows batch script (without using "COPY")

I want to export PostgreSQL query result into csv file using windows batch script (without using "COPY" because ... postgresql-query-result-into-csv-file-using-windows-batch-script...

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

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82 views

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c# - How to create graph in Xamarin?

How can I get a graph like this in Xamarin? Is there any library for graphs or how is this done? I ... https://stackoverflow.com/questions/65872730/how-to-create-graph-in-xamarin...

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

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131 views

1 answer

c++ - What's the right way to count the thread run time?

Like this: thread t1(getPrimes,begin,end, ref(vect)); start = chrono::high_resolution_clock::now(); t1.join(); ... /65872700/whats-the-right-way-to-count-the-thread-run-time...

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

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424 views

1 answer

plantuml - How can I split a rule with Lark EBNF?

I'm writing a grammar for parsing PlantUML State diagrams and have the following doubt: I had: transition: STATE arrow ... questions/65872693/how-can-i-split-a-rule-with-lark-ebnf...

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

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127 views

1 answer

javascript - Created hook not running again when pushing the same route with a new query

I have a component with a created hook like this: created() { if (this.$route.query.q) { //fetchdata } } ... hook-not-running-again-when-pushing-the-same-route-with-a-new-query...

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

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401 views

1 answer

postgresql - Postgres CHAR check constraint not evaluating correctly

My goal is to have a column which accepts only values of the type letters and underscores in ... /questions/65872472/postgres-char-check-constraint-not-evaluating-correctly...

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

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139 views

1 answer

Is this JavaScript function, taking a mutable reference argument, a pure function?

I have the same question as this one, but in the context of JavaScript. From Wikipedia: [a pure function ... -javascript-function-taking-a-mutable-reference-argument-a-pure-functio...

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

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219 views

1 answer

python - Running multiple functions concurrently

The goal of my code is to run both westernEurope.infection() and easternEurope.infection() at the ... //stackoverflow.com/questions/65872436/running-multiple-functions-concurrently...

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

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281 views

1 answer

How do I read special characters in a file using a .bat file

I have a .bat file(batch file) and I want it to be able to read a file, but it has lots of special characters ... /how-do-i-read-special-characters-in-a-file-using-a-bat-file...

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

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889 views

1 answer

artificial intelligence - What is the idea behind AI for writing articles. How It Works?

I want to understand what the idea of writing articles using AI, How It Works? I'm not asking for code examples, ... /what-is-the-idea-behind-ai-for-writing-articles-how-it-works...

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

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566 views

1 answer

amazon s3 - AWS Database Migration Service S3 Target connection not working. (Error Status code 1020912)

I created a S3 Target endpoint as instructed in the link. The S3 bucket and replication instances are in the ... -migration-service-s3-target-connection-not-working-error-status-c...

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

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300 views

1 answer

c# - How to parse datetime with DateTime.ParseExact

I have the following string that I need to parse string date = "2017-06-23T13:45:45.816" What is correct format string ... -a-way-to-convert-string-15-jan-21-to-a-valid-datetime...

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

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114 views

1 answer

PHP get multiple data from one row in Database

img I have one row with images names like this , row_multiple_imgs['path_one,path_two,path_tree']; all are separate ... /65873342/php-get-multiple-data-from-one-row-in-database...

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

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316 views

1 answer

javascript - DataTables sort mixed numeric and text column

I am trying to construct a DataTable sortable table that contains a column of numbers, but this column also ... com/questions/65873263/datatables-sort-mixed-numeric-and-text-column...

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

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392 views

1 answer

c# - How to store a large flags enum to a single column in a SQL database?

I have this enum : [Flags] public enum Actions { None = 0, MoveUp = 1, MoveDown = 2, MoveRight = 3, MoveLeft = ... to-store-a-large-flags-enum-to-a-single-column-in-a-sql-database...

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

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535 views

1 answer

How do I delete records older than 90 days in QuestDB

I am storing IoT sensor data streaming from mutltiple sources into a few tables in QuestDb and because of the huge size ... /how-do-i-delete-records-older-than-90-days-in-questdb...

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

0 votes

367 views

1 answer

Reading two xml files simultaneously using Linq in C#

I am trying to loop over 2 xml files simultaneously and loading into a list of custom JobModel objects. I am ... 65873214/reading-two-xml-files-simultaneously-using-linq-in-c-sharp...

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

0 votes

613 views

1 answer

r - empty contour plot in ggplot

I am trying to create a simple contour plot. Sample code is attached below. The output is an empty plot ... ://stackoverflow.com/questions/65873211/empty-contour-plot-in-ggplot...

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

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979 views

1 answer

pyspark - Why driver memory is not in my Spark context configuration?

When I run the following command: spark-submit --name "My app" --master "local[*]" --py-files main ... questions/65873182/why-driver-memory-is-not-in-my-spark-context-configuration...

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

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