keys
A sequence that contains all the lookup keys in the hash. Note that not all hashes support this (ask the programmer if a certain hash allows this or not).
<#assign h = {"name":"mouse", "price":50}> <#assign keys = h?keys> <#list keys as key>${key} = ${h[key]}; </#list>
Output:
name = mouse; price = 50;
Since hashes do not define an order for their sub variables in
general, the order in which key names are returned can be arbitrary.
However, some hashes maintain a meaningful order (ask the programmer
if a certain hash does that or not). For example, hashes created
with the above {...}
syntax preserve the same order as you have specified the sub
variables.
values
A sequence that contains all the variables in the hash. Note that not all hashes support this (ask the programmer if a certain hash allows this or not).
As of the order in which the values are returned, the same
applies as with the keys
built-in; see
there.