Every function, every part of regexp functions somewhere requires text matching. Matching using regexp in GoLang regexp (regular expressions) is all about string/pattern matching.To keep results that do not match, specify !=. You can specify that the regex command keeps results that match the expression by using =. Other times, we may with to match a number of repetitions in a given range/interval – for example, ensuring that a phone number is between 7 and 15 digits.Description: Specify the field name from which to match the values against the regular expression. For example, we want a field to contain an exact number of characters. We can specify the number of times a particular pattern should be repeated. This is quite handy for trying to fix malformed JSON that contains single ' vs the required double "Repeating a given number of times. The regex will only match 'foo + hi' & ignore the inner quote in 'baz (minus the words of course).
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