Is there a funtion in stdlib for masking a string?...

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[kartikpatodi]

Is there a funtion in stdlib for masking a string?
I have a use case where a mask is provided say ##-## and a string say "1234" and unsafe bits say 2.
So the result should be ##-34

[tseisel]

Nope, that doesn't exist in the stdlib. The stdlib contains only general-purpose utilities, so that including it in all Kotlin projects doesn't increase the program size.

[kartikpatodi]

How to implement this functionality

[karelpeeters]

for loops?

[kartikpatodi]

@karelpeeters Was looking if there is some other way or the "Kotlin way"..

[karelpeeters]

Well you're going to have to be a bit more specific, I don't get how the masks and unsafe bits work.

[kartikpatodi]

The unsafe bits are the number of digits from the last that can be exposed and and others are hidden and formatted as the mask

[kartikpatodi]

Like credit card numbers on the bank sms

[Dico]

Seems like an easy task with a for loop

[GauthierPLM]

val str = "1234123412341234"
val masked = str.substring(str.length - 4).padStart(16, '#')

[GauthierPLM]

You can mask it like this. After you can find your own way to add “-” between every X characters 🙂