Quantifiers - RegEx Beginner Tutorial
Quantifiers in regular expressions determine how many characters are matched. If you're matching too few or too many characters, you'll need to learn how to use quantifiers whether for regular expressions in C#, JavaScript, Python, or Java.
The approach is the same in multiple programming languages, and the main regex quantifiers you need to know are the + quantifier, * quantifier, ? quantifier, and {n} quantifier.
Some variations of these can be considered greedy quantifiers while others are lazy (non-greedy) quantifiers, but that's a bit too advanced for this beginner regex tutorial, so I'll leave you with a link to a regex cheat sheet if you'd like to learn more about them.
https://developer.mozilla.org/en-US/d...
I use regex101 to test my regex patterns, but you can use any online regex tester that meets your needs.
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Timestamps:
00:00 - Why You Need Quantifiers in Regular Expressions
00:58 - (+) Quantifier
02:06 - (*) Quantifier
03:07 - (?) Quantifier
03:47 - {n} Quantifier
04:57 - (+) Quantifier Visual Studio Demo
06:00 - Claim Your Custom Visual Studio Theme
06:37 - (*) Quantifier Visual Studio Demo
07:05 - (?) Quantifier Visual Studio Demo
07:36 - {n} Quantifier Visual Studio Demo
08:47 - Quick Recap Of Everything
09:17 - What's Next?
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#programming #regex #regularexpressions
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