Question

In the context of regex, what does '+' do?

Answer 1

The '+' symbol in regex is a quantifier that matches one or more occurrences of the preceding element.

Step-by-step explanation:

In the context of regex, the '+' symbol is a quantifier that specifies that the preceding element should occur one or more times. It matches one or more occurrences of the character or group that comes before it.

For example, the regular expression 'a+' will match one or more occurrences of the character 'a'.

Another example is the regular expression '[0-9]+' which will match one or more occurrences of any digit.