toBool static method

bool toBool(dynamic object, { dynamic mapKey, int? listIndex, })

Converts an object to a bool.

• Returns true if the object is a bool and equal to true.
• Returns true if the object is a String and equal to 'yes' or 'true' (case-insensitive).
• Returns true if the object is a num, int, or double and is larger than zero.
• Returns false for other types or if the object is null.

object The object to be converted to a bool. mapKey (Optional) Specifies the key to extract values from a Map object. listIndex (Optional) Specifies the index to extract elements from a List object.

Returns a bool, with a default value of false.

Example usage:

final object1 = true;
final bool1 = ConvertObject.toBool(object1); // true

final object2 = 'yes';
final bool2 = ConvertObject.toBool(object2); // true

final object3 = 10;
final bool3 = ConvertObject.toBool(object3); // true

final object4 = false;
final bool4 = ConvertObject.toBool(object4); // false

final object5 = 'no';
final bool5 = ConvertObject.toBool(object5); // false

final object6 = null;
final bool6 = ConvertObject.toBool(object6); // false

Implementation

static bool toBool(
  dynamic object, {
  dynamic mapKey,
  int? listIndex,
}) {
  if (mapKey != null && object is Map<dynamic, dynamic>) {
    return (object[mapKey] as Object?).asBool;
  }
  if (listIndex != null && object is List<dynamic>) {
    return (object.of(listIndex) as Object?).asBool;
  }
  return (object as Object?).asBool;
}