What is the difference between (a|b)* and a*b*? Can you show more examples of Kleene star and patterns? I've searched so many sites in Google, but it returns very little results on this topic. I would be very grateful as I am trying to understand how PHP regular expressions work.
Kleene star in programming. Difference between (a|b)* and a*b*?
622 Views Asked by good_evening At
1
There are 1 best solutions below
Related Questions in PHP
- How to add the dynamic new rows from my registration form in my database?
- Issue in payment form gateway
- How to create a facet for WP gridbuilder that displays both parent and child custom fields?
- Function in anonymous Laravel Blade component
- How to change woocomerce or full wordpress currency with value from USD to AUD
- General questions about creating a custom theme Moodle CMS
- How to add logging to an abstract class in php
- error 500 on IIS FastCGI but no clue despite multiple error loggings activated
- Composer installation fails and reverts ./composer.json and ./composer.lock to original content
- How to isolate PHP apps from each other on a local machine(Windows or Linux)?
- Laravel: Using belongsToMany relationship with MongoDB
- window.location.href redirects but is causing problems on the webpage
- Key provided is shorter than 256 bits, only 64 bits provided
- Laravel's whereBetween method not working with two timestamps
- Implementing UUID as primary key in Laravel intermediate table
Related Questions in KLEENE-STAR
- Shunting yard algorithm for parsing basic regular expressions with the Kleene star
- How do the kleene plus operators apply here?
- How to apply Kleene star on automata?
- Order in Kleene star operation?
- Using PCRE2 regex with repeating groups to find email addresses
- A DFA for Kleene star operation
- Regex allow asterisk(*) only once time and in the end
- Implementing Kleene star operator * (sort of) in C program
- How to use a kleene star operator (*) or it's variant (+) with variables in sparql?
- Kleene star semantics and set comparison
- String length after kleen's closure in finite-autometa theory
- Does the kleene-star's potence 0 fulfill a disjunction?
- Best way to implement Kleene star operation in Java
- Why can't the Kleene closure construction for an NFA be simplified?
- Deterministic Finite Automaton of Kleene Star
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
(a|b)* means "a or b, any number of times". a*b* means "Any number of a's then followed by any number of b's". So there exist strings ("baa", "abba", etc) that match the first, but not the second.