👉 A mapper is a type of software that converts one data structure (such as a CSV file, Excel table, or database) into another format. This conversion is usually done to make it easier to process and analyze data, such as by converting text to numbers, sorting, filtering, or summarizing. Mappers can be used for various purposes, such as data visualization, machine learning, natural language processing, and more. For example, a mapper could be used in a web application to extract data
