I have the following regex in JS - `/[()\/]/g` that matches `(` ,`)` ,`/` anywhere in a string. Why ...

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[Vitali Plagov]

I have the following regex in JS - /[()\/]/g that matches ( ,) ,/ anywhere in a string. Why exactly the same pattern doesn’t work with Kotlin when I pass it to the Regex?

[diesieben07]

Modifies have to be passed separately to the Regex constructor. Please show your exact Kotlin code.

[Vitali Plagov]

The code is

str.replace(Regex("/[()/]/g"), "")

[diesieben07]

Remove the / and / at the start and end (they are not part of the regex and just tell JavaScript that this is a regex). Also remove the g at the end which is a modifier and needs to be passed via the option parameter to the Regex constructor.

[diesieben07]

Actually, the g modifier is not a thing in Kotlin's Regex implementation.

[Vitali Plagov]

Yes, I tried that. But it doesn’t match my string

[diesieben07]

You might have to escape the /

[diesieben07]

And I have not used that feature before, but regexr.com tells me that that regex should work 😄

[Vitali Plagov]

Just did the same - run it in a scratch file and it work

[Vitali Plagov]

Turns out the regex checker in IDEA is not fully correct

[Vitali Plagov]

I trusted them 😞

[Kroppeb]

the checker might only check if it's a complete match?

[nkiesel]

replace is a loop around find and not match. So yes, str.replace(Regex("[()/]"), "") should do what you want.