变量作用域 作用域结构 全局作用域 局部作用域 let块 对于循环和推导式 常量 变量作用域 变量的作用域是代码的一个区域，在这个区域中这个变量是可见的。给变量划分作用域有助于解决变量命名冲突。这个概念是符合直觉的：两个函数可能同时都有叫做 x 的参量，而这两个 x 并不指向同一个东西。相似地，也有很多其他的情况下代码的不同块会使用同...

Essentials Introduction Getting Around Keywords Standard Modules Base Submodules All Objects Properties of Types Type relations Declared structure Memory layout Special va...

Essentials Introduction Getting Around Keywords Standard Modules Base Submodules All Objects Properties of Types Type relations Declared structure Memory layout Special va...

Environment Variables File locations JULIA_BINDIR JULIA_PROJECT JULIA_LOAD_PATH JULIA_HISTORY JULIA_PKGRESOLVE_ACCURACY External applications JULIA_SHELL JULIA_EDITOR Para...

Environment Variables File locations JULIA_BINDIR JULIA_PROJECT JULIA_LOAD_PATH JULIA_HISTORY JULIA_PKGRESOLVE_ACCURACY External applications JULIA_SHELL JULIA_EDITOR Para...

Metaprogramming Program representation Symbols Expressions and evaluation Quoting Interpolation Splatting interpolation Nested quote QuoteNode eval and effects Functions on...

Tasks Scheduling Synchronization Channels Tasks Core.Task — Type Task ( func ) Create a Task (i.e. coroutine) to execute the given function func (which must be callab...

Functions Argument Passing Behavior Argument-type declarations The return Keyword Return type Returning nothing Operators Are Functions Operators With Special Names Anonymou...

Control Flow Compound Expressions Conditional Evaluation Short-Circuit Evaluation Repeated Evaluation: Loops Exception Handling Built-in Exceptions The -function) throw func...

Control Flow Compound Expressions Conditional Evaluation Short-Circuit Evaluation Repeated Evaluation: Loops Exception Handling Built-in Exceptions The -function) throw func...