When the first edition was written, there was no built in Gremlin support for regular expressions. Starting with the TinkerPop 3.6.0 release, a new text predicate regex was added. An inverse step, notRegex, was also added. There are several places in the book where the lack of built in regular expressions is discussed. A way to build a custom predicate is also discussed. The manuscript should now be updated to reflect the new Gremlin steps.
When the first edition was written, there was no built in Gremlin support for regular expressions. Starting with the TinkerPop 3.6.0 release, a new text predicate
regexwas added. An inverse step,notRegex, was also added. There are several places in the book where the lack of built in regular expressions is discussed. A way to build a custom predicate is also discussed. The manuscript should now be updated to reflect the new Gremlin steps.