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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of ILENE
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QUESTION
I'm building a UI on flutter using some dummy data. I have modelled a class named movies
...ANSWER
Answered 2021-May-11 at 20:13- First of all, you should add "require" in your class. Otherwise dart will give you a similar error like the next one:
line 51 • The parameter 'movieName' can't have a value of 'null' because of its type, but the implicit default value is 'null'. (view docs) Try adding either an explicit non-'null' default value or the 'required' modifier.
Import the class and the example information where you need it.
import 'package:exampleapp/movie_list_sample_information.dart;
import 'package:exampleapp/movies.dart;
Use the variable to get the information
movieLists[0].movieName // gets the first movie of your list
The next dartpad uses your code as example: https://dartpad.dev/95d67aa68267296ac3fd8a56405b2880?null_safety=true
Press "Run" button and you should see the name of the first movie in "Console"
EDIT:
To read the list in dynamically in flutter you can use ListView.builder
QUESTION
I have the following code:
...ANSWER
Answered 2021-Jan-16 at 15:41The problem is how you add composite filters. If they are not single values, e.g. you're using $all or $ne, you have to use "full" documents as their values. bson.E is not a "full" document, it's just an element of a document. A full document is bson.D or bson.M.
So use this as your filter builder:
QUESTION
This is what I have so far and its giving me errors when sort(), sorted() are used. I have to import the names and print them. Sort the names and print them again.
The text file is formatted in two columns and is from notepad
...ANSWER
Answered 2019-Dec-11 at 04:44Try the below code, Hope this will help:
QUESTION
So I am writing a js script to create table and populate it with data. I want to limit presented data and decided to delete each array entry after I show insert it to dom.
The problem is that splice and shift methods delete every second element and I don't get it why.
This is the main responsible function.
...ANSWER
Answered 2019-Apr-11 at 14:10Change tabCell.innerHTML = myBooks[i][col[j]];
to
tabCell.innerHTML = myBooks[0][col[j]];
The splice removes your first element, so you always want to grab the "current" first element.
QUESTION
I am trying to calculate the revenue of each instructor from neo4j graph database with the following query
...ANSWER
Answered 2017-Mar-04 at 12:44Since you added relationship between your nodes, the query can be greatly simplified.
We need paths from each instructor to child instructors up to 3 levels down, and depending on how far down, we can get the appropriate percentage to run the calculations on the given transactions, then sum it all up.
Here's an example query that should work, though it will report on any instructor with at least one child instructor, instead of only instructors with at least 3 levels down of child instructors.
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