Map() function

Question

What is map function what it does and how we use it. 
 I see in some interfaces it has been used in ruleinputs as a datatype.

ujjwalr0002 · Answer

Hi maps are used to store data values as a key-value concept for more please check this out https://docs.appian.com/suite/help/22.3/fnc_system_map.html

Mike Schmitt · Answer

In addition to being able to pass it to a process as a PV (which does open up some nice new doors, as it were), the biggest strength of a!map() over a traditional dictionary, is that the data items within the map will keep their data type very well. In a dictionary it was often hard to use certain primitive operators (like "local!dict.number = 1") because data elements in a dictionary would resolve as a sort of "any type" data type, which did not play well with direct comparisons like the above.