mapIfNotNull<I, R> method

R? mapIfNotNull<I, R>(
  1. R mapper(
    1. I input
    ), {
  2. R? defaultValue,
})

Implementation

R? mapIfNotNull<I, R>(R Function(I input) mapper, {R? defaultValue})
{
  return this == null
      ? defaultValue
      : mapper(this);
}