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Merge/flatten an array of arrays

I have a JavaScript array, for example: [["$6"],["$12"],["$25"],["$25"],["$18"],["$22"],["$10"] ] How can I merge the separate inner arrays into one array like this: ["$6","$12",

P粉828463673 2023-08-27 12:05:43

Is the class identifier the key of the array?

Is the class identifier the key of the array?

齊天大宅 2023-10-04 00:37:56

javascript - How to merge the same key values ????of array objects and put the corresponding ids into an array

For example, old data: var old = [{code...}] What you want is var new = [{code...}] You want to merge objects with the same name and put the corresponding IDs into an array

ringa_lee 2017-06-26 10:57:10

Merge arrays created using Google Drive NextPageToken into one array

I have the following code for downloading files from GoogleDrive, the number of files is determined by nextPageToken as shown below. The code will continue adding arrays to the $files array until nextPageToken is null. At this point I have an unknown number of sub-arrays that I would like to merge i...

P粉872101673 2023-08-13 20:28:17

javascript - es6 problem of converting class array into array

Chestnut: var a = {'1':'gg','2':'love','4':'meimei',length:5};var arr=[...a];console.log(arr ); Error reported under Google Chrome: Uncaught TypeError: a[Symbol.iterator] is not a function Definition of class array: https://segmentfa...

扔個三星炸死你 2017-06-30 09:55:43

JS problem declaring array in class

{Code...} a error is undefined

淡淡煙草味 2017-05-19 10:25:21

iOS: Null pointer reference when encoding non-null enum type?

The structure is roughly like this. Class A contains an array of class B. Class B contains a variable of enumeration type C. When A is initially initialized, 10 B elements are initialized as shown in the figure. Except In addition, the B array in class A has not been modified. However, when encoding...

淡淡煙草味 2017-05-31 10:36:30

javascript - php array merging problem

Array({code...} Now we have merged the same info into an array, that is, 'Village East', 'Village West'... Now we want to merge the product_names in the same info together. For example, in Cunxi 'Product 1' and 'Product 2' are merged together in the form of an array. Add that hea...

我想大聲告訴你 2017-05-16 13:14:34

How to merge two arrays

I'm trying to merge two similar arrays Array with same keys([0]=>4064628[1]=>4064953[2]=>4064922[3]=>4064870[4]=>4064789[5]=>4064631 [6]=>4065044[7]=>4064942[8]=>4064938[9]=>4064936)Array([0]=>165020[1]=

P粉548512637 2023-08-31 09:47:28

How to conditionally merge two arrays into a two-dimensional array?

I encountered a small problem. The two arrays can be merged so that they can be quickly written into the database, but no matter how they are merged, it is not ideal. I would like to ask. Arrays 1 and 2 are composed of the same key, and the keys are changed to array1 and raary2. Can you please help,...

P粉925529649 2023-02-26 10:20:56

How to merge arrays and keep keys?

I have two arrays: $array1=array('a'=>1,'b'=>2,'c'=>3);$array2=array('d'=>4,'e'=> 5,'f'=>6,'a'=>'newvalue','123'=>456); I want to merge them and preserve the keys and order instead of re-indexing! ! How did it become like this? Array([a]=>newvalue[b]=>2[c]=>3[

P粉081360775 2023-10-17 11:01:01

Merge two arrays in the same row JQUERY

I have a problem that I can't merge two arrays in the same row, I have two arrays now and then I want to merge them because they have the same length Here are my two arrays and it looks like what I want by combining output like this, but this is what I tried constar1=$('input[class=namecheckbox]').m...

P粉610028841 2024-04-03 14:41:39

javascript - How to implement asynchronous loop query nesting

Assume that there is an existing student dictionary array, and the students have names and classroom numbers. First, query the schools that meet the conditions, facilitate the student dictionary array, create a student object and assign the name, school and class, but the class needs to first query ...

ringa_lee 2017-07-05 10:36:27

objective-c - oc package.a project xx.pch cannot be recognized in swift3.0

This problem is still a bit complicated. In a project, merge projects. The merged project is an .a library project encapsulated by oc. When merging the project into the swift project, many of the class names in the xx.pch header file of oc are missing. turn up,

天蓬老師 2017-05-02 09:38:20

How to use a class to output a two-dimensional array?

<?php class demo{ protected $name; protected $age; protected $wages; public function __construct($name,$age,$wages){ $this->name = $name; $this->age = $age; $this->wages = $wages

哥特 2018-05-07 09:59:35

When should the Symbol.species method be triggered? javascript - When should the Symbol.species method be triggered?

When reading the description on MDN, I encountered doubts. MDN describes this method like this: You may want to return an Array object on an array class that extends MyArray. For example, when using methods such as map() that return the default constructor, you want these methods to return the paren...

漂亮男人 2017-05-19 10:17:53

javascript - How to merge objects with the same key value in an array and put different values ??into an array after merging

Initially var old = [{code...}] The desired result var new = [{code...}]

伊謝爾倫 2017-06-26 10:57:14

HTML input tag unexpectedly moves CSS gridlines

To simplify my problem, let's say I have a 2x2CSS grid div. I use a grid template to resize 3 divs within these 4 cells (class names: "btn", "title", and "info") as shown in the code snippet below. (Merge the 2 columns in the second row to keep the 3rd div with class=&q...

P粉513318114 2023-09-14 00:31:55

class - How does PHP implement that all subclass attributes have toArray() method?

How to implement in PHP that all properties of subclasses have toArray() method? After the call, it becomes an array. How to design the parent class? ?

阿神 2017-05-16 12:59:22

How to return key-value pairs from map function using spread operator

I have an object and an array. Assume: constfirst={'key1':'somedate','key2':'somedate'} constsecond=['key3','key4'] Then use extended syntax to merge them into a single object. For each item in the array, I want to create a new key-value pair and put it into this merged object. Currently, I can only...

P粉253800312 2023-08-13 17:18:34