$ java -jar taq.jar declarations
Running query query_sample in global scope
sample(d=1234.56)declarations.taq reveals important details about variable
declarations made in what is called the “template scope”. This is
optionally placed before the template body. enclosed in {}
braces and contains declarations that are private to the template. One
important reason for privacy may be to prevent input data being relayed
to the template solution. What is demonstrated in this example
template scope variables must be typed and cannot be assigned a value
template scope variables are private, which is why the query solution only contains term “d”
it is good practice to use template scope variables for collecting input data
numeric types all have a default value of zero, hence check
a ? a == 0 is correct