String functions

contains(String, String): Boolean

Checks whether the string contains substring.

drop(haystack: String, needle: String): Boolean

Parameters

haystack: String

String to search in.

needle: String

String to search for.

Examples

{-# STDLIB_VERSION 4 #-}
{-# CONTENT_TYPE DAPP #-}
{-# SCRIPT_TYPE ACCOUNT #-}

"hello".contains("hell") # Возвращает true
"hello".contains("world") # Возвращает false

drop(String, Int): Str

Drops the first n characters of a string.

drop(xs: String, number: Int): String

Parameters

xs: String

The string.

number: Int

The number n.

Examples

drop("Apple", 0) # Returns "Apple"
drop("Apple", 1) # Returns "pple"
drop("Apple", 3) # Returns "le"
drop("Apple", 5) # Returns an empty string
drop("Apple", 15) # Returns an empty string

dropRight(String, Int): String

Drops the last n characters of a string.

dropRight(xs: String, number: Int): String

Parameters

xs: String

The string.

number: Int

The number n.

Examples

dropRight("Apple", 0) # Returns "Apple"
dropRight("Apple", 1) # Returns "Appl"
dropRight("Apple", 3) # Returns "Ap"
dropRight("Apple", 5) # Returns an empty string
dropRight("Apple", 15) # Returns an empty string

indexOf(String, String): Int|Unit

Returns the index of the first occurrence of a substring.

indexOf(str: String, substr: String): Int|Unit

Parameters

str: String

The string.

substr: String

The substring.

Examples

indexOf("Apple","ple") # Returns 3
indexOf("Apple","le") # Returns 4
indexOf("Apple","e") # Returns 5

indexOf(String, String, Int): Int|Unit

Returns the index of the first occurrence of a substring after a certain index.

indexOf(str: String, substr: String, offset: Int): Int|Unit

Parameters

str: String

The string.

substr: String

The substring.

offset: Int

The index.

Examples

indexOf("Apple","ple", 1) # Returns 2
indexOf("Apple","le", 2) # Returns 3
indexOf("Apple","e", 3) # Returns 4

size(String): Int

Returns the size of a string.

size(xs: String): Int

Parameters

xs: String

The string.

Examples

size("Ap") # Returns 2
size("Appl") # Returns 4
size("Apple") # Returns 5

split(String, String): List[String]

Splits a string delimited by a separator into a list of substrings.

split(str: String, separator: String): List[String]

Parameters

str: String

The string.

separator: Int

The separator.

Examples

split("A.p.p.l.e", ".") # Returns ["A", "p", "p", "l", "e"]
split("Apple", ".") # Returns ["Apple"]
split("Apple", "") # Returns ["A", "p", "p", "l", "e"]
split("Ap.ple", ".") # Returns ["Ap","ple"]

take(String, Int): String

Takes the first n characters from a string.

take(xs: String, number: Int): String

Parameters

xs: String

The string.

number: Int

The number n.

Examples

take("Apple", 0) # Returns an empty string
take("Apple", 1) # Returns "A"
take("Apple", 3) # Returns "App"
take("Apple", 5) # Returns "Apple"
take("Apple", 15) # Returns "Apple"
take("Apple", -10) # Returns an empty string

takeRight(String, Int): String

Takes the last n characters from a string.

takeRight(xs: String, number: Int): String

Parameters

xs: String

The string.

number: Int

The number n.

Examples

takeRight("Apple", 0) # Returns an empty string
takeRight("Apple", 1) # Returns "A"
takeRight("Apple", 3) # Returns "ple"
takeRight("Apple", 5) # Returns "Apple"
takeRight("Apple", 15) # Returns "Apple"