Learning Julia

Arguments

A function argument is a variable passed to a function in the form of an input so that it returns a specific output. A very simple example of a function taking an argument is stated as follows:

julia> function say_hello(name)           println("hello $name")       endsay_hello (generic function with 1 method)julia> say_hello("rahul")hello rahul

Here, the say_hello function takes an argument called name, which is a string. Upon calling the function with the name rahul, the hello string becomes hello rahul. Simple!

One thing to keep in mind is that, although Julia is dynamically typed, it supports the use of statically-typed variables. Modifying the preceding code, we have:

julia> function say_hello(name::String)           println("hello $name")       endsay_hello ...