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JavaScript - Remove duplicates from an array and return an array containing the duplicates and another array containing all other items

I want to run a filter or reduce operation on an array and remove all duplicates in the array based on the 'name' attribute like in this example. The examples I've seen are iterating through the array and keeping one of the duplicates, but in my case I need to separate them and return the duplicates...

P粉986937457 2023-08-17 22:28:55 0  1  609

Loop slideshow excluding clone duplicates in Cypress

I'm new to Cypress and am trying to cycle through a slideshow excluding cloned duplicates. I'm using indexing with .each() in cypress but this doesn't work. Below is my code if(index!=0&&index>=22){//dosomething}else{//dosomething} Below is a sample snapshot of my html code: Can anyone co...

P粉197639753 2024-03-25 22:41:02 0  1  608

Ask for code, ask for code, ask for code!!

Generate a random number from 1 to 60, take out the duplicates and ask for the appearance of the boss. Generate a random number from 1 to 60, take out the duplicates and ask for the appearance of the boss!! Generate a random number from 1 to 60, take out the duplicates and ask for the appearance of ...

鹿先生 2019-03-15 11:52:51 0  6  1697

MySQL deduplication, why can only a few hundred or dozens of duplicate data be removed each time, when there are obviously hundreds of thousands of duplicate data?

Requirement: Delete the items with the same primaryid and drugname in DRUG, and keep the smallest row of drug_seq. Question: MySQL uses these methods to remove duplicates. Why can it only remove hundreds or dozens of duplicate data each time? It is like squeezing out toothpaste. Execute it and remov...

P粉029305743 2022-09-05 14:49:26 0  0  941

Question about checking if there are duplicates

Will it check if it is duplicated when it loses focus? Submit without changes. Changes or additions can still be submitted and have no effect.

還要我怎樣 2019-03-22 16:23:36 0  0  1129

Will the query method column() automatically remove duplicates?

After I tested the content with the same value, only 1 was returned..

夏 / 夜 / 晚 / 風 2018-11-10 00:52:47 0  0  1100

How to remove only duplicate ul items for each li item using javascript html

I'm displaying a dynamically generated navigation structure. Each location has a store type generated from that location's stores. I need to remove duplicates for each location so groceries can appear in both locations. I tried the common jquery solution below which removed duplicates but it resulte...

P粉418214279 2024-03-29 20:54:12 0  1  518

How to remove duplicates in SQL table based on multiple fields

I have a gaming table with the following description: +---------------+-------------+------+-- ---+---------+----------------+|Field|Type|Null|Key|Default|Extra|+----- ----------+-------------+------+-----+---------+-- ----------------+|id|int(1

P粉757556355 2023-10-20 12:01:14 0  2  764

php - Error display after inserting duplicates after unique key is set

How to change the database error prompt to js, ??use if (insert statement) {echo "<script>alert('Already have this data')</script>"}insert statement does not return if a unique key is repeated. false but directly displays database errors

伊謝爾倫 2017-05-16 13:06:49 0  4  501

Add counted duplicate values ??in filtred array using ...new Set

I have an array with duplicate values ??which I get from API, the following code uses...newSet() method to get the notes for all math without duplicates: letnotes=[];if(props.getAllNotes( )){constmaths=props.getAllNotes().map(item=>{returnitem.subjects[0].math_note});notes=[...newSet(math

P粉186897465 2024-04-04 19:03:41 0  1  588

Reference: What is variable scope, which variables can be accessed from where, and what is an "undefined variable" error?

NOTE: This is a reference question about PHP variable scoping. Please close any other questions matching this pattern as duplicates. In PHP, what is variable scope? Can variables in one .php file be accessed in another file? Why do I sometimes get "undefined variable" errors?

P粉018653751 2023-07-23 19:17:03 0  2  706

SQL processing to clean and sum duplicate data in joined tables

I'm pulling reports from an accounting system. The system has a nasty habit of putting duplicates in the database, which it handles internally (instead of cleaning them up in the first place!) Take the totals table for invoice 125 as an example: +----- -------+-----------+----------+|invoice_id|code...

P粉354948724 2023-09-13 15:15:50 0  1  725

How to find JSON data based on other content in a JSON object when duplicates exist?

I'm currently implementing some data charts on a website, and I have a JSON that contains some data, specifically some ID numbers, some dates, and some data points. Because I have multiple dates under the same ID, I'm looking for a way to do essentially "find a JSON object with this ID and mont...

P粉713846879 2024-04-04 10:57:45 0  1  730

Validation rules for laravel form form validation

In laravel, when verifying whether fields are repeated, the following {code...} is verified. unique:users queries whether there are duplicates in the users table; but this is an operation on a single database; and what the current system needs to verify is not what I want. Database {code...} In data...

怪我咯 2017-05-16 16:55:44 0  2  665

Title rewritten as: Property does not exist on type 'Registration': Error: Property does not exist on type 'Registration'.ts(2339)

I'm developing using JavaScript and Typescript. I have the following function to check if an array has duplicates, but I'm getting an error and not sure how to fix it. Below are the errors and code excerpts. Error: Property 'toLocaleLowerCase' does not exist on type 'Registration'. ts(2339)Registrat...

P粉798010441 2023-12-23 14:41:03 0  1  574

javascript - One is an array and the other is an object. How to compare and remove duplicates?

{Code...} How do you compare arr and obj? After finding that id2 is repeated, remove the array object id:2 of arr and generate a new array?

僅有的幸福 2017-07-05 10:53:25 0  4  937

objective-c - What is the reason why there are null and duplicates when traversing NSDictionary in iOS?

When I was parsing JSON, null and duplicate data would appear when traversing the dictionary content to the model in the last step. Every previous step was correct. I had this problem when testing the api of a friend's own server. I also used The news API in Baidu APIStore also has the same problem....

phpcn_u1582 2017-05-02 09:34:28 0  2  818

python - Questions about NumPy array operations

{Code...} numpy array, with a total of tens of thousands of elements. Now I want to retain the number 000001 or the like in front of each element, and remove duplicates, leaving only a unique number. The result should be ['000001','000002','000003','000004'] In addition to using the for statement, i...

ringa_lee 2017-06-30 09:56:09 0  3  1426

Urgent, urgent, please help: mysql delete accidentally deleted

Yesterday I posted a request to remove duplicates and get the latest value. I tested the code provided by netizens in the test environment in the morning. As a result, I accidentally connected to the official environment, and the result was tragic. Now the data has been deleted by mistake. I urgentl...

阿神 2017-05-18 10:44:01 0  4  705

javascript - component does not update when react nested loop gets data

Purpose: Based on the found subcategory, find out its parent category and put it into it. Usage: Remove the duplicates from the parent category field in the subcategory and put it into par_arr, then traverse par_arr to get the parent category, and then insert the result into the collection of the su...

女神的閨蜜愛上我 2017-06-12 09:24:20 0  1  759