'how can I find a list contains in any element another list in flutter?

var firstList= [1,2,3,4,5];
var secondList= [3,5];

// compare result : 3,5
// return true

var firstList= [1,2,3,4,5];
var secondList= [6,7,8];

// compare result : null
// return false

How can I compare elements the two lists? If there is matching data in the two lists, return true. if there is no match, return false

listflutterdartcontains


Solution 1:[1]

there is plenty of ways to do it, you could use every() and contains() methods to achieve this

this is how I would do it:

  if (secondList.every((item) => firstList.contains(item))) {
    return true;
  } else {
    return false;
  }

Solution 2:[2]

And one more quick way just to check true or false

var firstList = [2, 2, 2, 3];
var secondList = [3, 3, 3];
check(int value) => firstList.contains(value);
bool res = secondList.any(check); // returns true

Solution 3:[3]

Next solution is not perfect, but maybe helpful for someone:

void main() {
  var list = ["aa", "bb", "cc"];
  for (var el in ['abc', 'aaa', 'bb', 'hmbb', 'afg', 'hhcc']) {
    bool isContains = list.any((e) => el.contains(e));
    if(isContains) {
      print(el);
    }
  }
}

Output:

aaa
bb
hmbb
hhcc

Solution 4:[4]

I found this works

bool bTest2 = lstPlayerIDPieceLocationPointID
        .any((element) => lstFoundPoints.contains(element));
    print('bTest2 any..contains: $bTest2');

Always finding if any item in 1 list is also in the other list. I did not care what is was, I just wanted to know if there is a match

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 awaik
Solution 3 Dmitry Bubnenkov
Solution 4 Derek Davidson

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