Respuesta :
Answer:
It means that it matches a to z in lowercase, 0 to 9 in digits and \ - in characters.
Explanation:
As In regular expressions such as [a-z] means that it will match between a to z in lower case.
In [0-9] means it will search from 0 to 9 in digits.
so
[a-z0-9] means that it will match all from a to z in lowercase and 0 to 9 in digits.
Answer:
a string containing any lowercase letter(s) or numeral(s) or a -
