A hashtable or a hash map is a data structure that is used to implement an associative array. It is user-defined reference types. It associates keys with values. The primary operation in hash table is look like: given a key (e.g. a studentâs name), find the corresponding value (e.g. that studentâs ID number).
DRTV is a type of television-based advertising that encourages viewers/consumers to call, visit a website or in some other way make a purchase, register, vote, make an appointment, request more information or take another desired action.
Direct response television (DRTV) is any television advertising that asks consumers to respond directly to the company â usually either by calling an 800 number or by visiting a web site. This is a form of direct response marketing. There are two types of direct response television, short form and long form. Short form is any DRTV commercial that is two minutes or less in length. Long form direct response is any television commercial longer than two minutes.