Reading multiple nested functions can be taxing on the brain. The previous example, collect(keys(attrs(dom.root))), can be rewritten to improve readability using Julia's pipe operator, |>.
For example, the following snippet nests three function calls, each inner function becoming the argument of the outermost one:
julia> collect(keys(attrs(dom.root)))
3-element Array{AbstractString,1}:
"class"
"lang"
"dir"
This can be rewritten for improved readability as a chain of functions using the pipe operator. This code produces the exact same result:
julia> dom.root |> attrs |> keys |> collect
3-element Array{AbstractString,1}:
"class"
"lang"
"dir"
What the |> operator does is that it takes the output of the first value and pipes ...
