Soloway's recurring rainfall: Difference between revisions

</syntaxhighlight>

=={{header|jq}}==

The following program is mainly intended for interactive use.

An appropriate invocation would be: jq -nrR -f compute-averages.jq

Please note:

* a null response is regarded as an invalid entry;

* if there are no valid entries, the average is not printed;

* leading and trailing spaces in entries are ignored, and a single + or - prefix is allowed;

* an "end-of-file" condition is equivalent to the occurrence of 99999.

<syntaxhighlight lang=jq>

def isinteger: test("^ *[+-]?[0-9]+ *$");

def soloway:

label $out

| foreach (inputs, null) as $x (null;

.invalid = false

| if $x == null then .break = true

elif ($x|isinteger) then ($x|tonumber) as $n

| if $n == 99999

then .break = true

else .sum += $n | .n += 1

end

else .invalid = $x

end;

if .break then ., break $out

elif .invalid then .

else empty

end)

| (select(.invalid) | "Invalid entry (\(.invalid)). Please try again."),

(select(.break and .sum) | "Average is: \(.sum / .n)") ;

soloway