How to instantiate and initialize 2-dimensional array

Question

I've been playing around in Flutter for the last couple of weeks and I'm finding that the documentation is useless.

I'm trying find documentation on how to setup a 2D Array. Something that should be easy to find, but I can't find anything useful on how to format an array. After much Google searching, I was able to create a 1D array, but haven't had any luck on creating a 2D Array.

Here's my 1D Array example in case someone comes across this post for that reason (the keyword 'static' shouldn't be required, it just allows me to use the Array on different scripts in my project.):

static var vGrades = ['PreK', 'K', '1st', '2nd', '3rd', '4th', '5th', '6th', '7th', '8th', '9th', '10th', '11th', '12th'];

Note, I don't want to name each column, just want to reference an Array like "vArray[2][3]" (3rd indexed line, 4th indexed element).

Hrithik Jaiswal · Accepted Answer · 2020-05-13 20:09:13Z

1

Follow This

int row = 3;
int col = 4;
var todo_list = List.generate(row, (i) => List(col), growable: false);
 //For fill;
twoDList[0][1] = "element";
print(twoDList);
 // [[null, element, null, null], [null, null, null, null], [null, null, null, null]]

answered May 13, 2020 at 20:09

Hrithik Jaiswal

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ALEXANDER LOZANO · Accepted Answer · 2021-10-12 00:18:36Z

0

for 2d String List like MyList[10][2]:

var MyList   =List.generate(10, (i) => List.filled(2, "", growable: false), growable: true);

answered Oct 12, 2021 at 0:18

ALEXANDER LOZANO

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