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..

Remove the slash characters from your second pattern

Dont use

/

that was it.. thanks!

Modifiers are not given in the regex but as parameters to

toRegex()

so there is no need to use the

/

delimiters

Also any JetBrains IDE should warn you about this.

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

If you hit

alt+Enter

on the string you get the “check” intention to test your expression in IntelliJ.