Regular expression greater than and less than

Question

I would like to match any one of these characters: < or > or <= or >= or =.

This one doe

Answer 1

You don't need to escape any of those characters in character class. Apart from that, you need to use quantifiers, to match more than 1 repetition of those characters.

You need this:

[<>=]{1,2}

Note the quantifier, to match 2 repetitions, as required for <= and >=.

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Also, note that this will also match - ==, <<. If you strictly want to match just those 4 strings, you can use this regex:

[<>]=?|=

Using ? after = makes it optional. So, first part will match - <, >, <=, and >=. And then we add = using pipe.