Core API – Kotlin Programming Language (original) (raw)

decapitalize

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase() }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase() }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.1

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase(locale) }

Returns a copy of this string having its first letter lowercased using the rules of the specified locale, or the original string, if it's empty or already starts with a lower case letter.

Since Kotlin

1.4

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase(Locale.getDefault()) }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase() }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.3

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase() }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.8

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}

Deprecated

Warning since 1.5

Use replaceFirstChar instead.

Replace with

replaceFirstChar { it.lowercase() }

Returns a copy of this string having its first letter lowercased using the rules of the default locale, or the original string if it's empty or already starts with a lower case letter.

Since Kotlin

1.8

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   println("abcd".decapitalize()) // abcd
println("Abcd".decapitalize()) // abcd 
   //sampleEnd
}