How can I iterate over the keys and values of a String Template 4 Map?

Question

In StringTemplate 4, the default behavior for iteration is to iterate over the keys instead of the values, which was the behavior in version 3.

I can not find the syntax for how to iterate over the keys and values at the same time for version 4.

Can someone post an example of the syntax?

Eden

Answer 1

You can use indirect property referencing to get the value for the key in the current iteration. Is this what you mean?

<myMap.keys:{k | <k> maps to <myMap.(k)>}; separator="\n">

prints:

Jake maps to Dog
Finn maps to Human

Salisbarry

bonus rep for the Adventure Time reference! – Eden

Answer 2

Sample input :

List<String> myList  =  new ArrayList<>();
myList.add("k1");
myList.add("k2");
myList.add("k3");


Map<String,String> myMap =  new HashMap<>();
myMap.put("k1", "v1");
myMap.put("k2", "v2");
myMap.put("k3", "v3");

• Prints key-value pairs in random order.

     $myMap.keys:{key | $key$  maps to $myMap.(key)$ }; separator="\n"$
  

Output:(random order)

 k3 maps to v3
 k1 maps to v1
 k2 maps to v2

• Prints key-value pairs in-order defined by list.

    $myList:{item | $item$  maps to $myMap.(item)$ }; separator="\n"$
  

Output:(ordered)

 k1 maps to v1
 k2 maps to v2
 k3 maps to v3

Bebop