oc代码直接转swift代码，极度好用，绝对福利～更多精彩oc代码直接转swift代码，极度好用，绝对福利～更多精彩

IOS修改导航栏高度demo,项目非常简单简约，方便大家参考如何正确地修改UINavigationController中的MyNavigationBar高度，博客地址https://blog.csdn.net/u010775335/article/details/86176848

ios.oc实现的,手指在屏幕上滑动获得前一个矩形框.可以自定义矩形地位.ios.oc实现的,手指在屏幕上滑动获得前一个矩形框.可以自定义矩形地位.

flatMap和Map差别flatMap2维数组以上可以降维

JFCitySelector(好用的都会选择器).zip

如何用xcode来排查ios奔溃的原因

经典书籍：Bios与焦点开发者指南PDF369页

类似水波纹扩散,发出的动画,同时伴随音频的放大与减小,可以暂停播放,改变吸气时间,吸气维持时间,呼气时间呼气维持时间,贝塞尔圆倒计时

MetalbyTutorials:BeginninggameenginedevelopmentwithMetalbyCarolineBegbieEnglish|2019|ISBN:1942878544|659Pages|TruePDF,EPUB,CODE|790MBBuildyourownlow-levelgameengineinMetal!Thisbookintroducesyoutographicsprogra妹妹inginMetal—Apple’sframeworkforprogra妹妹ingontheGPU.You’llbuildyourowngameengineinMetalwhereyoucancreate3Dscenesandbuildyourown3Dgames.ThisbookisforintermediateSwiftdevelopersinterestedinlearning3Dgraphicsorgainingadeeperunderstandingofhowgameengineswork.TopicsCoveredinMetalbyTutorialsTheRenderingPipeline:Takeadeepdivethroughthegraphicspipeline.3DModels:Import3DmodelswithModelI/Oanddiscoverwhatmakesupa3Dmodel.CoordinateSpaces:Learnthemathbehind3Drendering.Lighting:Makeyourmodelslookmorerealisticwithsimplelightingtechniques.Textures&Materials:Designtexturesandsurfacesformicrodetail.CharacterAnimation:Bringyour3Dmodelstolifewithjointsandanimation.Tessellation:Discoverhowtousetessellationtoaddagreaterlevelofdetailusingfewerresources.Environment:Addaskytoyourscenesandusetheskyimageforlighting.Instancing&ProceduralGeneration:Saveresourceswithinstancing,andgeneratescenesalgorithmically.Multipass&DeferredRendering:Addshadowswithadvancedlightingeffects.Andmore!

haarcascade_eye.xml，HaarCascade常用来做人脸检测，其实它可以检测任何工具。
OpenCV项目源码中有很多训练好的Haar分类器。