metaprogramming for capturing the name of a function

name_macro.md

julia> macro name(ex)
           ex.head === :function || 
               error("can be used for function defintions only")
           name = ex.args[1].args[1]
           assignment = :(local __NAME__ = $name)
           pushfirst!(ex.args[2].args, assignment)
           return ex
       end
@name (macro with 1 method)

julia> @name function foo(x,y)
           println("My name is ", __NAME__)
           x + y
       end
foo (generic function with 1 method)

julia> foo(1,2)
My name is foo
3