利り用よう者しゃ定てい義ぎ演えん算ざん

Meanings

1

user-defined operation

Computing term for an operation defined by the user, as opposed to a built-in operation.

このプログラミング言げん語ごでは、利り用よう者しゃ定てい義ぎ演えん算ざんを簡かん単たんに追つい加かできる。
In this programming language, you can easily add user-defined operations.