Exception filters Filters Inheritance Exception filters The only difference between the HTTP exception filter layer and the corresponding web sockets layer is that instead o...

5.7 Piping Operations 5.7 Piping Operations R users are familiar with the pipe operator %>% which allows chaining operations together. That means that the output of an operati...

音频 用来操作音频的库 audiolazy：Python 的数字信号处理包。官网 audioread：交叉库 (GStreamer + Core Audio + MAD + FFmpeg) 音频解码。官网 beets：一个音乐库管理工具及 MusicBrainz 标签添加工具。官网 dejavu：音频指纹提取和识别。官网 django-e...

嵌套类与内部类 内部类 匿名内部类 嵌套类与内部类 类可以嵌套在其他类中： class Outer { private val bar : Int = 1 class Nested { fun foo () = 2 } } val d...

Comments Single-line comments Multi-line comments Documentation comments Comments Dart supports single-line comments, multi-line comments, anddocumentation comments. Sing...

CANCEL SESSION Required privileges Synopsis Parameters Example Cancel a single session Cancel multiple sessions See also CANCEL SESSION The CANCEL SESSION statement l...

UI libraries Create a UI library Assign a UI library in code See also UI libraries BeginnerArtistDesigner UI libraries contain UI elements such as grids, buttons, sliders...

Using with Preprocessors Using PostCSS as your preprocessor Build-time imports Nesting Variables Future CSS features Using Sass, Less, or Stylus Sass Less Stylus Using...

DOLIST and DOTIMES DOLIST and DOTIMES I’ll start with the easy-to-use **DOLIST** and **DOTIMES** macros. **DOLIST** loops across the items of a list, executing the loop bod...

Containers Containers Type Declaration,example Description List List<Type> ,List<Int32> A variable-length sequence consisting of same-type elements. Dictionary Dict<KeyType, Va...