利用 りよう しゃ定義 ていぎ演算 えんざんだったら
riyōshateigi enzandattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 利用者定義演算

1. If it were a user-defined operation.; When it is a user-defined operation.

Tara Conditional
Computing