vpID); int GetXDim(ViewPortID vpID); …struct ViewPort { ViewPort(/**/): vpID_(CreateViewPt(/**/)) {/*RAII*/} ~ViewPort(){if (vpID_) FreeViewPt(vpID_);} opera6ons?struct ViewPort { ~~~~ ViewPort(ViewPort&& vp): vpID_(vp.vpID_) {vp.vpID_ = 0;} ~~~~ };struct ViewPort { ~~~~ ViewPort(ViewPort&& vp): vpID_(vp {vp.vpID_ = 0; /* Call OS to make a new ViewPort */} ~~~~ };struct ViewPort { ~~~~ ViewPort(ViewPort&& vp): vpID_(vp.vpID_) {vp.vpID_ = 0;}

Meta Tag viewport7 • Introduit pour iPhone8, puis standard de fait – Par défaut, l’affichage est réduit (980px affichés sur écran 320px) – Meta tag viewport permet de changer ce ratio • viewport : display display area ≠ rendering surface • Mobiles : viewport > écran (iphone 3 : v:980 / é:320) • Media queries comparent au viewport 6https://developer.mozilla.org/fr/docs/CSS/Media_queries 7https://blog.javierusobiaga javierusobiaga.com/stop-using-the-viewport-tag-until-you-know-ho 8https://developer.apple.com/library/content/documentation/AppleApplications/Reference/SafariWebContent/Usi ngtheViewport/UsingtheViewport.html

unordered list: 40

page head : @vite('resources/css/app.css') template: 45 @vite('resources/css/app.css')

id=5185%3A3&viewport=446%2C382%2C0.037524838000535965&scaling=contain 信号式抢占 https://www.figma.com/proto/JYM6TcdzBx7WtanhcJX0rP/bootstrap-Copy?page-id=5189%3A2&node- id=5189%3A12&viewport=-105%2C318%2C0 https://www.figma.com/proto/JYM6TcdzBx7WtanhcJX0rP/bootstrap-Copy?page-id=5187%3A0&node- id=5187%3A1&viewport=446%2C382%2C0.028840554878115654&scaling=contain markroot -> allgs[i] -> g -> suspendG(g) -> scan https://www.figma.com/proto/JYM6TcdzBx7WtanhcJX0rP/bootstrap-Copy?page-id=5187%3A387&node- id=5187%3A388&viewport=446%2C382%2C0.037981197237968445&scaling=contain 当前的 Go 语⾔还有 哪些问题 第六部分 线程⽆法销毁 线程在创建后便⽆法⾃动 CGO

Release() // Frame draws the graphics operations from op into a viewport of target. Frame(frame *op.Ops, target RenderTarget, viewport image.Point) error … } // Device represents the abstraction rendering Gio operations. type Device interface { BeginFrame(target RenderTarget, clear bool, viewport image.Point) Texture EndFrame() NewComputeProgram(shader shader.Sources) (Program, error)

Instrument expensive destructors • or explicitly release smart objects at the end of a scope bool Viewport::load_scene(const char* filename) { ZoneScoped; // ... std::shared_ptr new_scene; Instrument expensive destructors • or explicitly release smart objects at the end of a scope bool Viewport::load_scene(const char* filename) { ZoneScoped; // ... std::shared_ptr new_scene;

html> {% block head %} 章：模板优化 52 第一处，我们添加了一个新的 元素，这个元素会设置页面的视口，让页 面根据设备的宽度来自动缩放页面，让移动设备拥有更好的浏览体验： 第二处，新的页面添加了一个导航栏：