Anyone knows why this is giving me a return value of false when it should be true? `"\b[01]+\b".toRe...

# getting-started

[Christian Sousa]

Anyone knows why this is giving me a return value of false when it should be true?
"\b[01]+\b".toRegex().matches("11010011")

Basically what I’m trying to do is just check if there is something else besides 0 or 1 in the string. I tried also with
"/^[0-1]+$/".toRegex().matches("11010011")

But with the same result..

[okarm]

Remove the slash characters from your second pattern

[spand]

Dont use /

[Christian Sousa]

that was it.. thanks!

[Christian Sousa]

One question, why is it like this?

[spand]

Modifiers are not given in the regex but as parameters to toRegex() so there is no need to use the / delimiters

[okarm]

Also any JetBrains IDE should warn you about this.

[Christian Sousa]

Oh, didn’t noticed, and I was just trying stuff out in the kotlin playground instead of the IDE 😛

[Christian Sousa]

Thanks for your help!

[Matteo Mirk]

If you hit alt+Enter on the string you get the “check” intention to test your expression in IntelliJ.