![]() Without parentheses, the expression f refers to the function object, and can be passed around like any other value: julia> g = f Īs with variables, Unicode can also be used for function names: julia> ∑(x,y) = x + y The short function syntax is accordingly quite idiomatic, considerably reducing both typing and visual noise.Ī function is called using the traditional parenthesis syntax: julia> f(2,3) Short, simple function definitions are common in Julia. In the assignment form, the body of the function must be a single expression, although it can be a compound expression (see Compound Expressions). The traditional function declaration syntax demonstrated above is equivalent to the following compact "assignment form": julia> f(x,y) = x + y There is a second, more terse syntax for defining a function in Julia. This function accepts two arguments x and y and returns the value of the last expression evaluated, which is x + y. The basic syntax for defining functions in Julia is: julia> function f(x,y) ![]() Julia functions are not pure mathematical functions, because they can alter and be affected by the global state of the program. In Julia, a function is an object that maps a tuple of argument values to a return value.
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