CAAniamtion TimingFunction 參數調整

由於CAAnaimation 內建Ease function實在太少，可透過 functionWithControlPoints，調整出曲線 function，做出Q彈的動畫

ease function 參考圖：

圖片link:
https://camo.githubusercontent.com/893dc398d7fe5aa586b82631f65b4c2f4b47d147/687474703a2f2f692e696d6775722e636f6d2f65384f637368762e706e67

調整參數產生器：

http://netcetera.org/camtf-playground.html


範例：

CATransition *transtion = [CATransition animation];

    transtion.duration = 1.0f;

    [transtion setTimingFunction:[CAMediaTimingFunction functionWithControlPoints:0.8f :0.0f :0.2 :3.0f]];

    [transtion setType:@"cube"];

    [transtion setSubtype:kCATransitionFromBottom];

    

    [label.layer addAnimation:transtion forKey:@"transtionKey"];

Git 移除資料夾遇到 Operation not permitted

刪除資料夾
git rm -r --cached "資料夾名稱"

另外：刪除所有該delete的檔案

git rm $(git ls-files --deleted)