Error NG0900 An error occurred while trying to compare. Only arrays and iterable objects allowed

Using *ngFor I am able to render the data but it throws this error Error: NG0900: An error occurred while trying to compare '[objectObject]'. Only arrays and iterable objects are allowed This is my service method asyncgetEditions():Promise<Observable<Cigales>>{returnthis.http.get<Ciga...

P粉226667290 2024-02-25 19:15:04 0  1  467

javascript - Is it good to use object literals to organize code?

{code...} Or {code...} Which of these two is better? The object method looks very clear, but there are many disadvantages in using it. For example, you have to put this in front of methods and variables. Will this increase unnecessary performance consumption? Will writing it as an object facilitate ...

伊谢尔伦 2017-06-12 09:28:53 0  3  663

java - Can the input parameters of Spring Data Jpa update operation be passed in as objects?

For example, the following code {code...} where id and content are attributes of the object Book. Can I define the input parameter as Book, just like {code...} If so, how do I write my update sql?

漂亮男人 2017-05-17 10:04:29 0  1  743

After sealing the object with Object.seal() in es5, can the properties on the object prototype be modified?

mdn's explanation is that this translation does not affect the attributes inherited on the prototype, but the value of the __proto__ attribute cannot be modified. Then I tested it myself and found that the prototype can be deleted and modified after the object is sealed, and then I did not understan...

漂亮男人 2017-06-10 09:49:20 0  2  929

php - Can the objects detected by Yii2 AR be accessed using array mode? ?

$infoModel = InfoModel::findOne(1); The above is to find the data with id 1. I have printed $infoModel. It is an object, but the correct data can be printed successfully by outputting the following 2 sentences: {Code...} The following is the print $infoModel: {code...} And by the way &lt;?php...

给我你的怀抱 2017-06-23 09:11:24 0  1  902

In Gao Qi's Java video code, why does the time print out using a new object created using the Date class, but the hash code address prints out using a self-created object?

Recently, when watching Teacher Gao's video, I found a knowledge point that I didn't quite understand. The code is as follows: {Code...} The output result is as follows: {Code...} It also prints an object. Why does the Date class object output the current time, but since What about creating an objec...

巴扎黑 2017-06-23 09:14:34 0  4  971

javascript - How should I optimize the code I wrote to convert object data into DOM nodes?

Let’s briefly introduce the idea: ajax to the object, then create the object in sequence from child to parent, set the style, and add levels. Then the code looks like this: {code...} That's it. . . How to optimize? The front-end's support for ES6 is not ideal, so string templates cannot be used, and...

三叔 2017-06-12 09:28:43 0  3  924

Can vscode do code checking for js?

I used sublime before, which can prompt js errors. Now I am using vscode. I would like to know if there is a plug-in that can report js code errors?

ringa_lee 2017-05-19 10:43:43 0  1  689

javascript - Why can Array call methods directly, but ordinary Object objects cannot?

For example, we can sort the array like this: {code...} But we can't call the method of the object like this: {code...} Also, why can string methods be called directly, but Number type and Boolean type cannot. I know something about strings. When calling the string method, a temporary Str...

phpcn_u1582 2017-07-05 11:05:29 0  3  1361

Can PDO result sets output mysqli_result objects instead of regular two-dimensional associative arrays?

Can PDO result set output mysqli_result objects instead of regular two-dimensional associative arrays?

P粉928989981 2022-07-20 16:10:19 0  0  617

javascript - Vue.js uses functions to operate properties of objects in data without triggering updates

I encountered this problem when learning the Vue.js framework. In the object iteration part of list rendering, I put an object object in the data and a button element in the li element to delete the attributes corresponding to the iteration, but after clicking the button , the corresponding attribut...

淡淡烟草味 2017-05-18 10:46:34 0  1  494

javascript - What is the role of weak set in ES6?

Weak set is not iterable and cannot use for-of, keys(), values(), forEach() to traverse values. So what is its function? Is it just about storing objects?

某草草 2017-05-19 10:43:42 0  1  557

Rewrite title as: Extract HTML and WordPress shortcodes as array of objects

I'm developing a headless WordPress website using Nuxt as the frontend. The website has thousands of articles with shortcodes. I get all the page data via graphql and render the content using v-html and everything is fine, but the shortcode apparently only renders as plain text. Most of them are ver...

P粉504920992 2023-09-08 11:18:41 0  1  512

**Error type: Unable to iterate 'NoneType' object**

I want to use ssh tunnel to access Mysql database. Unfortunately, the architecture of this code does not seem to support my query format, as the function does not appear to be compatible with my query format. /Users/peter/PycharmProjects/MySqlLocalhostTest/venv/lib/python3.10/site-packages/paramiko/...

P粉141035089 2024-04-06 10:26:38 0  1  538

How does reentrantlock lock a specific object?

If I have an array object with a length of 10: {code...} Access to each object is mutually exclusive, but access between multiple objects can be concurrent. Then using synchonized can be like this: {code...} I would like to ask, how to implement such a lock if using reentrantlock? Remark:...

扔个三星炸死你 2017-06-12 09:25:57 0  1  916

Does jdbcTemplate support mapping of complex objects?

{Code...} Can you use jdbcTemplate to map the result set into the above complex objects (that is, an object is also associated with an object or a collection of objects)? If you don't use mybatis or hibernate, is there any other way to facilitate mapping?

PHPz 2017-05-17 09:58:27 0  1  733

How to use java objects to represent complex json?

There is a kind of json object that needs to be used a lot, so I want to encapsulate it into an object, {code...} The current idea is to put one layer of objects and another layer of tooltip, xAxis, and series objects, but it is completely off target. It is just an auxiliary object. . Are there any ...

给我你的怀抱 2017-05-17 10:08:15 0  2  629

Display nested array of objects in HTML table by iterating

I have the following input containing an array of nested objects. summary is the parent object array, run_type is the nested object array. letinput={"summary":[{"name":"Release","run_type":[{"environment":"6nc","type&quot

P粉638343995 2024-04-05 14:11:42 0  1  1540