mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? evm(
    1. EvmTransactionRpc value
    )?,
  2. TResult? solana(
    1. SolanaTransactionRpc value
    )?,
  3. TResult? tron(
    1. TronTransactionRpc value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( EvmTransactionRpc value)?  evm,TResult? Function( SolanaTransactionRpc value)?  solana,TResult? Function( TronTransactionRpc value)?  tron,}){
final _that = this;
switch (_that) {
case EvmTransactionRpc() when evm != null:
return evm(_that);case SolanaTransactionRpc() when solana != null:
return solana(_that);case TronTransactionRpc() when tron != null:
return tron(_that);case _:
  return null;

}
}