RosettaCodeData/Task/Menu/Jq/menu-1.jq

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532 B
Plaintext

def choice:
def read(prompt; max):
def __read__:
prompt,
( input as $input
| if ($input|type) == "number" and 0 < $input and $input <= max then $input
else __read__
end);
__read__;
if length == 0 then ""
else
. as $in
| ("Enter your choice:\n" +
(reduce range(0; length) as $i (""; . + "\($i + 1): \($in[$i])\n")) ) as $prompt
| read($prompt; length) as $read
| if ($read|type) == "string" then $read
else "Thank you for selecting \($in[$read-1])" end
end ;