WebJun 28, 2024 · var list = [1, 2, 3]; var list2 = [0, ...list]; So this is all about double and triple dots in flutter and their used case. For more info buy the book “Make Yourself The Software Developer: Let’s Dive into Flutter & … WebJan 30, 2024 · First convert list1 and list2 into their own individual streams, and then use StreamZip to combine both streams. This for example will turn both values into a stream of strings containing both values: StreamZip ( [list1, list2]).map ( (valuePair) => "$ {valuePair [0]}, $ {valuePair [1]}")); Share Improve this answer Follow
Create lists with different types of items Flutter
WebJan 16, 2024 · Most of the time if I can avoid Map and I will use List because it is very easy for me to handle large amount of data(In flutter I can throw a list to a ListView easily). But both have there own greatness for depending on the scenario. And note that Map cannot have duplicate key, ... WebJul 20, 2024 · How to access a keyless two-dimensional array in flutter. I want to access a two-dimension JSON array like this, and I can't access the array inside the other array that is nested, the second array has no key, with the key "data" I can reach the first array but inside that array there is another array and I can't access that one. \u0027slight y2
How can I iterate through two lists in parallel in Dart?
WebI have a two-dimension ArrayList that contains double values: ArrayList> data = new ArrayList>(); In analogy with classic arrays , I would like to sort the "cols" of this matrix :I want to take the items having the same index in the sub ArrayLists, and then sort them. Like calling Collections.sort() … WebJan 22, 2013 · Prior to the v2 lib update, you could create 2 dimensional lists like this: var twoDee = new List(2).map( (_) => new List(3)); Now it looks like this: var twoDee = new... WebOct 24, 2024 · 1 Answer Sorted by: 1 Create a class ButtonColor which will manage the text and color of a specific button eg: class ButtonColor { Color color; String text; ButtonColor (this.color, this.text); } Then, create a list of buttons and passed them to the column. Complete Example: \u0027slight y0