31 lines
772 B
Julia
31 lines
772 B
Julia
using Printf
|
|
|
|
function _menu(items)
|
|
for (ind, item) in enumerate(items)
|
|
@printf " %2i) %s\n" ind item
|
|
end
|
|
end
|
|
|
|
_ok(::Any,::Any) = false
|
|
function _ok(reply::AbstractString, itemcount)
|
|
n = tryparse(Int, reply)
|
|
return isnull(n) || 0 ≤ get(n) ≤ itemcount
|
|
end
|
|
|
|
"Prompt to select an item from the items"
|
|
function _selector(items, prompt::AbstractString)
|
|
isempty(items) && return ""
|
|
reply = -1
|
|
itemcount = length(items)
|
|
while !_ok(reply, itemcount)
|
|
_menu(items)
|
|
print(prompt)
|
|
reply = strip(readline(STDIN))
|
|
end
|
|
return items[parse(Int, reply)]
|
|
end
|
|
|
|
items = ["fee fie", "huff and puff", "mirror mirror", "tick tock"]
|
|
item = _selector(items, "Which is from the three pigs: ")
|
|
println("You chose: ", item)
|