by @kodeazy

flutter How to check the position of element in a List dart file?

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  • In this blog we will discuss on how to identify the position of element in a List.
  • we use indexOf function to check the position.
  • if element is present returns the position of the element if not present returns -1.
  • Below is the syntax.

    List<int> exampleArray = [1, 2, 3, 4];
    exampleArray.indexOf(1)
  • Below is the sample code to checck the position of element.

    void main() {
    List<int> exampleArray = [1, 2, 3, 4];
    int index = exampleArray.indexOf(1);
    if (index != -1) {
    print('Element Position $index');
    } else {
    print('Element is not present');
    }
    }

    Output:

    0