it is a snap 很简单，小菜一碟

【例句】
As you'll discover, it's a snap to create the view component of an application with this clever framework.
您会发现，用这个更加聪明的框架创建应用程序的视图组件简直就是小菜一碟。

Excuse me, your boyfriend is a superficial , playboy, it is a snapjudgement, I even do not know who is he.
对不起，我说你的男朋友花心是太草率了，我甚至还不认识他。