All Questions
189
questions
2
votes
3
answers
68
views
The problem of mapping in creating a Generic Method
This Is My Models :
public class Result1
{
public string Price { get; set; }
public string Id { get; set; }
}
public class Result2
{
public string firstName { get; set; ...
- 31
-1
votes
2
answers
55
views
Looping through file with lists is returning "none" with mapping but works when I test manually [duplicate]
first time attempting Advent of Code with python and running into an issue with my loop. I've successfully been able to take the input file and break it into lists as shown below for the output.txt. I'...
- 1
0
votes
1
answer
75
views
deparse() and paste() not working as expected when mapping over a list
This is a very similar (but slightly different) question to this:
Paste element name onto columns in each list element
So I understand if this gets flagged as a duplicate.
I am trying to use deparse() ...
- 13
2
votes
0
answers
27
views
R Function to create "blended" list by joining on matching elements?
Say I have a list of int vectors that looks like:
1: {1,4,5}
2:{2}
3:{2,3}
4:{4,5}
5:{5}
I want to receive a version of this list where all common items are shared between all members, like so:
1: {1,...
- 31
0
votes
3
answers
45
views
Having trouble looping over potential outcomes in a list
I have the following code that loops over each sublist in the existing list. So it adds on the last element of each and maps it from A-B over each sub list.
existing_list = [[1, 2, 3, 4], [2, 3, 4]]
A ...
- 11
0
votes
1
answer
621
views
how to define a two field list on pyarrow.schema
I have a list object with this data:
[
{
"id": 7654,
"account_id": [
17,
"100.01.001 Cash"
]
}
]
and I want to transfer this data into a ...
- 1
1
vote
2
answers
81
views
Check if a record exist in a list with no explicit match
What I mean is for example I have this list of language objects with Id and Code :
{ Id = 1, Code = "N" },
{ Id = 2, Code = "E" },
{ Id = 3, Code = "D" }
But I receive a ...
- 597
-2
votes
2
answers
535
views
How to return each word and its respective length from a list
I am trying to find the length of all the words in a string and return a list with each word and its lengths next to it. Here is an example:
A string of "hello python" would return ["...
- 5
0
votes
2
answers
517
views
How can i searching from Map<String, List<dynamic>> Flutter
i'm try to make Search Bar and Searching from Map<String, List>
but i got error like this --> "A value of type 'Iterable<MapEntry<String, List>>'
can't be assigned to a ...
- 3
0
votes
1
answer
505
views
Create objects from a list of IDs in a simple way
Is there a way to simplify the following with a stream or something?
final List<Fruit> fruits = new ArrayList<>(fruitIds.size());
for (final long id : fruitIds) {
final var fruit = new ...
- 314
1
vote
1
answer
218
views
How to match the multiple values in a list of list with another list of list with the same amount of values then put into a df?
I have two lists of lists both with the same amount of multiple values. I want to match these values and then put them into a dataframe.
Example of the two lists:
Reason_lst = [['Too cool', 'Too sad', ...
- 77
0
votes
1
answer
21
views
How to have a value in a dataframe repeat so that the values in a new column are mapped to it [duplicate]
I have three lists for a dataframe. I am trying to map the multiple values in one list to one value in another list to then have the value repeat in the dataframe.
Here is my list and expected out:
...
- 77
1
vote
2
answers
238
views
How to map two list of list together to one value in my dataframe?
I have two lists of lists that I am trying to map to another value in my dataframe.
Example of the list:
Potential_Cond_lst = [['Any Muscle Dis'], ['Type 2 fun','My happy place','Any Endo','Any Muscle ...
- 77
0
votes
2
answers
471
views
type '(dynamic) => ProductModel' is not a subtype of type '(String, dynamic) => MapEntry<dynamic, dynamic>' of 'transform'
Tried almost every solution. No luck :(
Future<List<ProductModel>> getProducts() async {
try {
final response = await apiService.sendRequest.get('/product');
if (response....
- 22.6k
0
votes
1
answer
377
views
Is there any way I could map Routes in Flutter?
I tried creating a list of items to map out on my app, and I tried inserting a named route to each item for it's page destination. And when I tried to use Navigator.pushNamed(context, listName....
- 135