tuliomonteazul/regex-cheatsheet.md

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regex-cheatsheet.md

Regex Cheatsheet

Quick reference about regex to look up

Feature: Negative lookahead `?!`

Specifies a group that can not match after the main expression (if it matches, the result is discarded). Doesn't work in Javascript, but works on Sublime Text.

Situation: We have a list with the text `"user" : "<id>"` where the id vary betwen 123, 234, 345. You want to find if there is any other values for `<id>` that are not included in the list (123, 234, 345).

Regex: user" : "(?!123|234|345)

tuliomonteazul/regex-cheatsheet.md

Regex Cheatsheet

Feature: Negative lookahead ?!

Situation: We have a list with the text "user" : "<id>" where the id vary betwen 123, 234, 345. You want to find if there is any other values for <id> that are not included in the list (123, 234, 345).

Feature: Negative lookahead `?!`

Situation: We have a list with the text `"user" : "<id>"` where the id vary betwen 123, 234, 345. You want to find if there is any other values for `<id>` that are not included in the list (123, 234, 345).