toBool static method

bool? toBool(
  1. dynamic s
)

Returns a bool from a String if it is a bool value including '0' / '1' / 'no' / 'yes'

Implementation

static bool? toBool(dynamic s)
{
  try
  {
    if (s == null) return null;
    if (s is bool) return s;

    String b = s.toString();
    b = b.trim().toLowerCase();
    if ((b == 'false') || (b == '0') || (b == 'no'))  return false;
    if ((b == 'true')  || (b == '1') || (b == 'yes')) return true;
    return null;
  }
  catch(e)
  {
    return null;
  }
}