Julia - Language - Functions - Single Expression Functions

These functions can be written in a single expression and mimic the way we solve maths functions on a piece of paper. Consider the popular function, f(x) = x*x = x^2


$ julia
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julia> f(x) = x^2
f (generic function with 1 method)

julia> f(2)
4


Let us see all the methods which we can pass to our square function.

julia> methods(f)
# 1 method for generic function "f":
f(x) in Main at REPL[1]:1

julia> 

We can see that, single expression function is very convenient. It is a shorthand and almost a mathematical syntax. A single expression function is a generic function with no name.