iterableIsEqual<T> static method

bool iterableIsEqual<T>(Iterable<T>? a, Iterable<T>? b)

Compare two lists of bytes for equality. This function compares two lists of bytes 'a' and 'b' for equality. It returns true if the lists are equal (including null check), false if they have different lengths or contain different byte values, and true if the lists reference the same object.

Implementation

static bool iterableIsEqual<T>(Iterable<T>? a, Iterable<T>? b) {
  /// Check if 'a' is null and handle null comparison.
  if (a == null) {
    return b == null;
  }

  /// Check if 'b' is null or if the lengths of 'a' and 'b' are different.
  if (b == null || a.length != b.length) {
    return false;
  }

  /// Check if 'a' and 'b' reference the same object (identity comparison).
  if (identical(a, b)) {
    return true;
  }

  /// Compare the individual byte values in 'a' and 'b'.
  for (int index = 0; index < a.length; index += 1) {
    final valueA = a.elementAt(index);
    final valueB = b.elementAt(index);
    if (valueA is Map && valueB is Map) {
      // Recursively compare maps
      if (!mapIsEqual(valueA, valueB)) return false;
    } else if (valueA is Iterable && valueB is Iterable) {
      // Recursively compare iterables
      if (!iterableIsEqual(valueA, valueB)) return false;
    } else if (valueA != valueB) {
      return false;
    }
  }

  /// If no differences were found, the lists are equal.
  return true;
}