Julia 中文社区 May 17, 2021 Contents Contents i I 主页 1 II Julia 1.5 中文文档 3 1 鸣谢 7 2 简介 9 III 手册 11 3 入门 13 3.1 资源 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 幂、对数与平方根 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 三角和双曲函数 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 特殊函数 . . . Task（协程） . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 11 变量作用域 95 作用域结构 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 11 Types 120 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of restrictions on valid names, it has become useful to adopt the following conventions:CHAPTER 3. VARIABLES 11 • Names of variables are in lower case. • Word separation can be indicated by underscores ('_'),

10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 11 Types 120 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of restrictions on valid names, it has become useful to adopt the following conventions:CHAPTER 3. VARIABLES 11 • Names of variables are in lower case. • Word separation can be indicated by underscores ('_'),

Variables 10 4.1 Allowed Variable Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 Assignment expressions and assignment versus mutation . . . . . . . . . . . . . . 12 4.3 Stylistic 10.6 Tasks (aka Coroutines) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 11 Scope of Variables 111 11.1 Global Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of

The Julia Language V1.11.6 The Julia Project July 11, 2025Contents Contents i I Manual 1 1 Julia 1.11 Documentation 2 1.1 Important Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . Variables 10 4.1 Allowed Variable Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 Assignment expressions and assignment versus mutation . . . . . . . . . . . . . . 12 4.3 Stylistic 10.6 Tasks (aka Coroutines) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 11 Scope of Variables 111 11.1 Global Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Variables 10 4.1 Allowed Variable Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 Assignment expressions and assignment versus mutation . . . . . . . . . . . . . . 12 4.3 Stylistic 10.6 Tasks (aka Coroutines) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 11 Scope of Variables 111 11.1 Global Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of

10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 11 Types 119 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of restrictions on valid names, it has become useful to adopt the following conventions: CHAPTER 3. VARIABLES 11 • Names of variables are in lower case. • Word separation can be indicated by underscores ('_'),

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Integers and Floating-Point Numbers 11 4.1 Integers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 11 Types 118 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.9.4 (2023-11-14) _/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release |__/ | julia> 1 + 2 3 julia>

10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 11 Types 119 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.9.0-DEV.1799 (2022-11-13) _/ |\__'_|_|_|\__'_| | Commit b44ce138b05 (0 days old master) |__/ | julia> 1 + 2 3 julia> Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Integers and Floating-Point Numbers 11 4.1 Integers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 10.4 Typed Globals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 11 Types 118 11.1 Type Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assign the value 10 to the variable x julia> x = 10 10 # Doing math with x's value julia> x + 1 11 # Reassign x's value julia> x = 1 + 1 2 # You can assign values of other types, like strings of