Regular Expressions 101

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/
\/\*([^*]|\*+[^*/])*\*+\/
/
gm
\/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
\* matches the character * with index 4210 (2A16 or 528) literally (case sensitive)
1st Capturing Group
([^*]|\*+[^*/])*
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
1st Alternative
[^*]
Match a single character not present in the list below
[^*]
* matches the character * with index 4210 (2A16 or 528) literally (case sensitive)
2nd Alternative
\*+[^*/]
\*
matches the character * with index 4210 (2A16 or 528) literally (case sensitive)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
Match a single character not present in the list below
[^*/]
*/
matches a single character in the list */ (case sensitive)
\*
matches the character * with index 4210 (2A16 or 528) literally (case sensitive)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Generated Code

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Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report.
For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/