React Native implementation method of storing JSON values ​​as key-value pairs

I am displaying company name and ID from json stored in companyData and storing them as key and value simultaneously using async storage in ReactNative. I got the following error, so I used JSON.stringify to convert both values ​​to strings before storing them as key-value pairs, but I still get the...

P粉502608799 2023-09-14 22:48:30 0  2  613

How to store objects in array?

I have two arrays and I want to store them in an array and create them as an object. constname=["Amy","Robert","Sofie"];constage=["21","28","25"];The output I want is: constperson=[{name:'Amy',age :'21'},{nam

P粉744691205 2024-04-02 18:41:14 0  2  463

Is there any difference in storage between MySQL, VARCHAR(1000) and TEXT (purpose: to store long strings)?

The actual phenomenon is expected to understand the difference between VARCHAR/TEXT when storing large strings. How to choose the type? Understanding TEXT, an intermediate virtual table {code...} will be generated. The expected phenomenon is to master the experience of data type selection (especiall...

PHP中文网 2017-05-18 10:56:22 0  1  1545

Using AWS SDK for PHP 3.x: Get the latest objects in an S3 bucket by last modification time.

I'm trying to get the latest object in a bucket by last modified time using AWS SDK for PHP 3.x. I've seen how to use the AWS CLI to achieve this functionality. Here it is: Using AWS CLI to get the last modified objects in an S3 bucket by last modification time. But I don't know how to use PHP SDK t...

P粉262113569 2023-07-28 11:50:32 0  1  543

Questions about object references in Java

1. Do all references to class objects only store memory addresses? 2. Are all references to class objects of the same data type as the class object? String a = new String("b") Can a be regarded as a String type? 3. How are memory addresses stored in references? Where is it stored? Thanks

给我你的怀抱 2017-05-27 17:40:20 0  1  645

Laravel public storage returns 404 for images

Following the Laravel documentation (I'm using Laravel with docker using sail), I created a symlink for storage phpartisanstorage:link. I also tried recreating the link using the full path starting from the root directory. Then I store a file //...$filename='signatures/signature_'.auth()->user()-...

P粉798343415 2023-12-12 16:05:09 0  1  503

How are object methods in classes stored in memory?

<?phpclass Demo01{        public function say(){            echo 'hello';        }    }      

茄子 2019-03-05 15:37:34 0  0  727

About the implementation of symfony (doctrine) table reuse

There are four tables {code...} vote stores users' like records for Articles and Questions; use vote_type to distinguish whether the stored records are likes for articles or questions id user_id votable_id vote_type Description 1 2 1 article This record represents user 2 Likes for article 1 1 2...

怪我咯 2017-07-03 11:42:27 0  2  802

How are branches stored and recorded in GIT?

There are four kinds of objects in GIT, blob, tree, commit, and tag, which are used to store data. So for branches, how does GIT store which branches are in a project and the status of these branches?

天蓬老师 2017-05-24 11:31:43 0  1  808

Local Storage: A How-To Guide to Saving and Restoring File Objects

I have an application using HTML5/JavaScript that uses &lt;inputtype="file"accept="image/*;capture=camera"onchange="gotPhoto(this)"&gt; to capture camera images. Since my app wants to run offline, how do I convert the File (https://develop

P粉253518620 2023-08-22 13:29:16 0  2  514

javascript - How to use data to save the value obtained by vuex's getters in the vue component

I obtained a user object like this. How can I use the data inside this component to store the value of this user object to avoid directly modifying vuex when v-modaling the value?

PHP中文网 2017-05-19 10:08:08 0  2  698

PHP documentation for conditional polymorphic calls

For $item, there is a polymorphic recordable relationship. In the database, this is stored in the loggable_type and loggable_id fields in the items table (works in PHP 8+ and Laravel). For each $item within $items, I'm trying to type-hint it.

P粉127901279 2023-08-06 15:31:19 0  1  535

How to rename a MySQL database (change schema name)?

How to quickly rename a MySQL database (change its schema name)? Normally I just dump the database and re-import it with a new name. For very large databases this is not an option. Apparently renaming {DATABASE|SCHEMA}db_nameTOnew_db_name; did something bad, only exists in a few versions and is over...

P粉320361201 2023-08-23 13:09:22 0  2  589

sql - PHP scheduled task, which regularly summarizes the data in one data table every day and stores it in another form. Which method is better?

Personally, I prefer to use stored procedures to complete the requirements. I don’t know if there is any other method because I am not very familiar with crontab.

我想大声告诉你 2017-05-27 17:41:55 0  1  547

Group search results into groups and store as an array of objects

In PHP I use grep to search and count all cases of certain classes in almost all files. \exec("grep-orE'".$classesBarred."'../../front/src/components|sort|uniq-c",$allClassesCount);where $classesBarred contains something similar to search-unfocused|bg- app|enlarge

P粉198814372 2023-09-10 23:18:31 0  1  556

laravel5.2 session usage

Please tell me, how to store, get the value and clear the session in laravel5.2. I followed the documentation, but after storing it in controller A, I cannot get the value in controller B.

迷茫 2017-05-16 16:50:26 0  3  451

Re-title: How to sort a table based on number of likes and time correlation in MySQL?

I have a simple problem, I have two mysql tables, one stores photos and the other stores likes. The structure is as follows: table `photos`-id, name, image_id table `likes`-id_photos, timestamp Now it is very simple to sort the photos according to the number of likes and get the top 3. You can use t...

P粉771233336 2023-09-09 09:22:12 0  1  597

MySQL self-join missing data

I want to perform a self-join on a table to present the values ​​column-wise. For each object, there are multiple properties (up to a known limit), but not all properties for all objects are stored. I have tried various joins but there are always missing rows and I want null values. Starting table: ...

P粉464208937 2024-03-31 10:07:32 0  1  400

"Cannot write file at specified location... AccessDenied" error when creating directory using AWS S3 and Flysystem

I'm having some difficulty trying to create a directory using Flysystem on AWSS3 - I keep getting an AccessDenied response. My bucket has all public access blocked, but the bucket policy allows the user making the request to do all operations on it: {"Version":"2008-10-17","...

P粉147045274 2024-01-06 11:44:49 0  1  616

I'm trying to pull a list of download links from firebase storage to display in my React/nextjs component

When trying to pull the array, the data is always empty. Does anyone know where I'm going wrong? I checked the console and as far as I can tell there is a reference to firebase storage but no data. But there are 4 documents in my storage which should output URL links. This is my component importReac...

P粉481035232 2023-09-15 18:34:49 0  1  765