letlocalx=2letglobalx=3endend hard:用于函数(如syntax, anonymous & do-blocks), type, immutable, macro 嵌套函数会改变母函数作用域中的local变量 x,y=1,2functionfoo()x=2# introduces a new localfunctionbar()x=10# modifies the parent's
Julia(字符串) 字符串是字符的有限序列。当然,真正的麻烦来自于人们问一个角色是什么。英语演讲熟悉的字符是字母A,B,C等,用数字和常用标点符号在一起。这些字符通过ASCII标准进行了标准化,并映射到0到127之间的整数值。当然,还有许多其他非英语语言使用的字符,包括带有重音和其他修饰的ASCII字符变体,相关的脚本(例...
Destructuring in function arguments: when an expression such as (x, y) is used as a function argument name, the argument is unpacked into local variables x and y as in the assignment (x, y) = arg (#6614). Named tuples, with the syntax (a=1, b=2). These behave very similarly to...
The function then returns an expression forming the body of the function to be called at run time (#7311). Documentation system for functions, methods, types and macros in packages and user code (#8791). The syntax function foo end can be used to introduce a generic function without yet ...
An anonymous function accepting multiple arguments can be written using the syntax(x,y,z)->2x+y-z. A zero-argument anonymous function is written as()->3. The idea of a function with no arguments may seem strange, but is useful for "delaying" a computation. In this usage, a block of...
The proposed account explains how the comparative subclause is connected to the matrix clause, how the subclause is formed in the syntax and what additional processes contribute to its final structure. In addition, it casts light upon these problems in cross-linguistic terms and provides a model...
They can be created with the syntax A = sparse(rows,cols,vals) which takes a vector rows of row indices, a vector cols of columns indices and a vector vals of stored values. The strategy exploited to create the sparse versions of tangent and assembled matrices at the beginning of the ...
of the helpers. This is one part of the code I haven't had time to "mathematize". I am hoping the helpers will be unnecessary one day and update will be expressed in easy to understand natural mathematical notation once Julia has in-place array operation syntax that is generic for ...
Destructuring in function arguments: when an expression such as (x, y) is used as a function argument name, the argument is unpacked into local variables x and y as in the assignment (x, y) = arg (#6614). Named tuples, with the syntax (a=1, b=2). These behave very similarly to...
The more challenging goal of Rulia is to try to provide a R syntax to call julia function which as most as possible close to the original julia syntax. Let us start with a simple example. ## An utility function to fix the seed of Random number in julia jl_set.seed(12) # to fix ...