Email domain counter

Package importer reads from a CSV file and returns a sorted data of email domains along with the number of customers with e-mail addresses for each domain.

Package exporter export data in requested format. Currently only csv format is supported

Requirements

To build the application it is required to have:

• Go 1.25 installed

Executable

To build the application call the command:

make build

To check the all available execution flags call:

./bin/domain-counter --help

Usage of the application:

• csvSeparator string Fields separator. Example: ";", ",", "|". (default ",")
• outFile string Name of the output file. If empty stdout is used.
• path string Name of the input file. (default "customers.csv")
• sortDescending Sort descending. Default is false
• verbose Verbose output. Default is false

Tests

Unit tests

To start unit tests please call the command:

make go_test_unit

Benchark tests

To start benchark tests please call the command:

make go_test_bench