letNullable<R> method

  1. @optionalTypeArgs
R? letNullable<R>(
  1. R? block(
    1. T? it
    )
)

Backwards-compatible variant that passes the nullable receiver to block.

Prefer let for cleaner null handling.

Implementation

@optionalTypeArgs
R? letNullable<R>(R? Function(T? it) block) =>
    this == null ? null : block(this);