bliki: Tell Dont Ask

Tell-Don't-Ask is a principle that helps people remember that object-orientation is about bundling data with the functions that operate on that data. It reminds us that rather than asking an object for data and acting on that data, we should instead tell an object what to do. This encourages to move behavior into an object to go with the data. Let's clarify with an example. Let's imagine we need t

[Dai_Kamijo]

"Tell, Don't Ask" について。図が分かりやすい。 / “TellDontAsk” — Takuto Wada (@t_wada) July 30, 2015 from Twitter https://twitter.com/Dai_Kamijo July 31, 2015 at 09:32AM via IFTTT

[t-wada]

"Tell, Don't Ask" について。図が分かりやすい。

[yyamano]

or me, tell-don't-ask is a stepping stone towards co-locating behavior and data, but I don't find it a point worth highlighting.