RegexPal VS Debuggex

BUT - As far as resources for building out the regex patterns, I use regexpal.com and a copy of this https://cheatography.com/davechild/cheat-sheets/regular-expressions/pdf/ printed out beside me. Once you get into it, the power of subgroups, and lookahead/behind processing beats some of the mental gymnastics you would need to go to code it out in your language of choice. Source: almost 2 years ago

Spend an afternoon really diving into it, bookmark regexpal.com, and call it a day IMO. Source: almost 2 years ago

i’m a professional developer and I just relearn it every time I need it, which is about once or twice a year, but depending on someone’s specialty they may swim around in it all day. It can get really complicated. https://regexpal.com is where I kick it around testing until it works. Source: almost 2 years ago

Debuggex.com is a great tool for visualizing how a regex will execute character-by-character and testing it against a variety of inputs. Source: over 1 year ago

Combine that with Debuggex and you're a god at the game )). Source: about 2 years ago

My trick with understanding regexes, is not actually trying to understand them by looking at the text form. Instead copy paste them in a visualliser, like debuggex.com. This makes them sooo much easier to understand. Once you do that with this one (and also read the PR description), you'll realize it actually isn't that crazy complex. Source: over 2 years ago

Debuggex.com is also great, as you get a graphical preview of what the regex is actually doing. Source: over 2 years ago