Julia - Check if every character in string is lowercase or space

Question

How do I check if every character in a string is lowercase or space?

"this is all lowercase"   -> true 
"THIS is Some uppercase " -> false 
"HelloWorld  "             -> false 
"hello world"              -> true

Answer 1

You could use the predicate/itr method of all (docs:

julia> f(s) = all(c->islower(c) | isspace(c), s);

julia> f("lower and space")
true

julia> f("mixED")
false