Type funtions

This section explains how to use type functions in APL.

The table summarizes the type functions available in APL.

Function	Description
iscc	Checks whether a value is a valid credit card (CC) number.
isimei	Checks whether a value is a valid International Mobile Equipment Identity (IMEI) number.
ismap	Checks whether a value is of the dynamic type and represents a mapping.
isreal	Checks whether a value is a real number.
isstring	Checks whether a value is a string.
isutf8	Checks whether a value is a valid UTF-8 encoded sequence.