whats the easiest way to make the first character of a string uppercase, but leaving the rest as-is ...

# getting-started

[LastExceed]

whats the easiest way to make the first character of a string uppercase, but leaving the rest as-is ? need an extension function similar to .uppercase()

[LastExceed]

i came up with fun String.foo() = this[0].uppercase() + drop(1) , is that already the best it can be ?

[Scott]

You can use the replaceFirstChar extension combined with the .uppercase() extension.

"kotlin".replaceFirstChar { it.uppercase() }

[LastExceed]

thanks

[ephemient]

The recommended replacement for the deprecated .capitalize() extension is .replaceFirstChar { it.titlecase() }, not .uppercase(), because it does make a difference: https://pl.kotl.in/NbGTR5LaB

'ß'.uppercase() == "SS"
'ß'.titlecase() == "Ss"