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QUESTION
i have a map like this:
...ANSWER
Answered 2021-Jun-15 at 19:06ListView is a widget that represents a list of widgets arranged linearly.
You have multiple constructors for this widget. The one you used, ListView.builder()
is the one suggested when there is a large number of children to be displayed. (In your example, if the Map contains many players.)
The default constructor only requires a List
and is considerably more simple. If you don't have a large map, I strongly suggest you to use this one instead. But since you tried using the builder
one, you should do as follow:
- First, have your data arranged in a List. This way you can access the elements through an integer index easily:
List[0]
. Ideally you should have the data already in a list form, but if you need you can convert it like this:
QUESTION
I have a dataset with the name of Danish ministers and their position from 1990 to 2020 (data comes from dataset called WhoGovern; https://politicscentre.nuffield.ox.ac.uk/whogov-dataset/). The dataset consists of the ministers name
, the ministers position
, the prestige
of that position, and the year
in which the minister had that given position.
My problem is that some ministers are counted twice in the same year (i.e., the rows aren't unique in terms of name
and year
). See the example in the picture below, where "Bertel Haarder" was both Minister of Health and Minister of Interior Affairs in 2010 and 2021.
I want to create a dataset, where all the rows are unique combinations of name
and year
. However, I do not want to remove any information from the dataset. Instead, I want to use the information in the prestige
column to combine the duplicated rows into one. The observations with the highest prestige should be the main observations, where the other information should be added in a new column, e.g., position2
and prestige2
. In the example with Bertel Haarder the data should look like this:
(PS: Sorry for bad presenting of the tables, but didn't know how to create a nice looking table...)
Here's the dataset for creating a reproducible example with observations from 2010-2020:
...ANSWER
Answered 2021-Jun-08 at 14:04Reshape the data to wide format twice, once for position
and the other for prestige_1
, and join the two results.
QUESTION
My problem is that, I have a List of Icons(CustomWidgets) what are provide by an API. I need put this icons in my App but when the are 7 or more its looks like these:
I want to put the icons in separate rows. I've tried out a method which split the list in 2 and add it dynamically but didn't print anything because I'm using a FutureBuilder to print the Icons.
Here is the code:
...ANSWER
Answered 2021-Apr-16 at 01:34What I suggest is to use Wrap instead of Row in your case, widget will place in the 2nd row is not enough space
THERE IS THE WAY TO DO IT:
QUESTION
i am trying to make login function but the function always make my input was wrong even i using the correct data from database
here's my login section
...ANSWER
Answered 2021-Jun-15 at 11:46From your image, it shows that the password (firsttt) is in the database in plaintext. However, when you are querying it, you are using md5 to hash it before you check the database. The MD5 hash of firsttt is 568745cb18115e238907fbf360beb37a and since that doesn't match the field in the database it does not return a result. If you want to see the result return positive, you can remove the md5() function for now just to see it but you should secure the database in some other way.
MD5 alone would not be secure as common passwords are easily detected. The passwords need to be hashed and salted, which makes them more unique and unindentifiable.
For example, php provides a password_hash function that will hash and salt the password: https://www.php.net/manual/en/function.password-hash.php
which you should use when adding a user to the database.
They also provide a password_verify function that will be able to tell you if the submitted password is correct: https://www.php.net/manual/en/function.password-verify.php
Read here for more information: https://www.php.net/manual/en/faq.passwords.php
QUESTION
I have a table with posts that can have multiple categories, and a table with categories that can have multiple posts. models.py:
...ANSWER
Answered 2021-Jun-15 at 11:16This might help you:
QUESTION
I am investigating if the header in react-navigation
can be animated similar to the most widely used social applications like Twitter, etc.
For this purpose recently, I encountered coinbase's example which is given here.
My questions are:
- In general, how the react-navigation header can be animated?
- Specifically, how to blend the Coinbase example with the react-navigation?
Similarly, I could not find any clean example for react-navigation usage with react-navigation-collapsible either.
So any atomic example code is appreciated.
...ANSWER
Answered 2021-Jun-11 at 10:30QUESTION
My social-icon(link) worked and was visible. And suddenly it disappeared and didn't work.
HTML:
...ANSWER
Answered 2021-Jun-14 at 15:28You didn't import Font Awesome. Add this to the tag:
QUESTION
I am working on a React project and am trying to convert a blob of JSON into JSX markup.
I have this code working, but it only seems to render the very first item. I am unsure how to get it to return the required, entire stack.
https://codesandbox.io/s/nervous-matsumoto-q8h0c?file=/src/Home.js
The JSON blob would look something like this:
...ANSWER
Answered 2021-Jun-14 at 13:46You have a for
loop but are returning an element on the first iteration (line 130 in your sandbox). You probably want to map
them instead.
QUESTION
The project: for a list of meta-data of wordpress-plugins: - approx 50 plugins are of interest! but the challenge is: i want to fetch meta-data of all the existing plugins. What i subsequently want to filter out after the fetch is - those plugins that have the newest timestamp - that are updated (most) recently. It is all aobut acutality... so the base-url to start is this:
...ANSWER
Answered 2021-Jun-09 at 20:19The page is rather well organized so scraping it should be pretty straight forward. All you need to do is get the plugin card and then simply extract the necessary parts.
Here's my take on it.
QUESTION
Good day, I'm creating a social media app using MEAN stack which will contain an option to list the users you are following however, as per Collections.Find() has been deprecated, I was using Colletions.estimatedDocumentCount() to list the users in JSON (as currently I'm testing it using postman).
It shows the number of users and how many you are following however, there is no more data in the JSON to display.
This is my function. Any help will be very appreciated
...ANSWER
Answered 2021-Jun-14 at 11:06You are using paginate()
incorrectly.
Check this:
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