Julia's Design Choices for Positional vs Keyword Arguments in Function Calls and Broadcasting

[vishalpaudel]

Recently I have been feeling more and more ways to realise that julia is well designed. One instance of this is when I realized something about keyword arguments, and why non keyword arguments are unmentionable in function calls. I mean:

In python:

def myfun(a, *, b):
    print(a, b)

myfun(1, b=3) # does and should work
# myfun(1, 3) # does not and should not work

# but
myfun(a=1, b=3) # works but is confusing, in julia is illegal

Julia takes a clear stance on this, the reason for this to me, even still, was only partially motivated, until today when I found myself thinking about broadcasting over keyword arguments.

The docs mentioned this:

"Keyword arguments are not broadcasted over, but are simply passed through to each call of the function. For example, round.(x, digits=3) is equivalent to broadcast(x -> round(x, digits=3), x)."

I don't have a use-case for broadcasting over keyword arguments, but

(
    decision A=> keyword arguments unmentionable in function calls, 
    decision B=> broadcasting over keyword arguments is illegal
)

Could someone kindly clarify, I am just curious about both of the decisions and if there is any connection between both of these design choices?