waves_logo Docs
  • Ride Programming Language
    Ride Programming Language
  • Getting Started
    Getting Started
  • Syntax Basics
    • Directives
      Directives
    • Definition
      Definition
    • Expression
      Expression
    • Constant
      Constant
    • Variable
      Variable
    • Function
      Function
    • Exception
      Exception
    • Comment
      Comment
    Syntax Basics
  • Script Types
    • dApp Script
      • Annotations
        Annotations
      • Callable Function
        Callable Function
      • Verifier Function
        Verifier Function
      dApp Script
    • Account Script
      Account Script
    • Asset Script
      Asset Script
    Script Types
  • Standard Library
    Standard Library
  • Data types
    • Boolean
      Boolean
    • ByteVector
      ByteVector
    • Int
      Int
    • String
      String
    • Unit
      Unit
    • List
      List
    • Tuple
      Tuple
    • Union
      Union
    Data types
  • Structures
    • Script Actions
      • BinaryEntry (v4)
        BinaryEntry (v4)
      • BooleanEntry (v4)
        BooleanEntry (v4)
      • Burn (v4)
        Burn (v4)
      • DataEntry (v3)
        DataEntry (v3)
      • DeleteEntry (v4)
        DeleteEntry (v4)
      • IntegerEntry (v4)
        IntegerEntry (v4)
      • Issue (v4)
        Issue (v4)
      • Reissue (v4)
        Reissue (v4)
      • ScriptTransfer (v3 and v4)
        ScriptTransfer (v3 and v4)
      • SponsorFee (v4)
        SponsorFee (v4)
      • StringEntry (v4)
        StringEntry (v4)
      Script Actions
    • Script Results (v3)
      • ScriptResult
        ScriptResult
      • TransferSet
        TransferSet
      • WriteSet
        WriteSet
      Script Results (v3)
    • Common Structures
      • Address
        Address
      • Alias
        Alias
      • Asset
        Asset
      • AssetPair
        AssetPair
      • AttachedPayment
        AttachedPayment
      • BalanceDetails
        BalanceDetails
      • BlockInfo
        BlockInfo
      • Invocation
        Invocation
      • Order
        Order
      • Transfer
        Transfer
      Common Structures
    • Transaction Structures
      • BurnTransaction
        BurnTransaction
      • CreateAliasTransaction
        CreateAliasTransaction
      • DataTransaction
        DataTransaction
      • ExchangeTransaction
        ExchangeTransaction
      • GenesisTransaction
        GenesisTransaction
      • InvokeScriptTransaction
        InvokeScriptTransaction
      • IssueTransaction
        IssueTransaction
      • LeaseCancelTransaction
        LeaseCancelTransaction
      • LeaseTransaction
        LeaseTransaction
      • MassTransferTransaction
        MassTransferTransaction
      • ReissueTransaction
        ReissueTransaction
      • SetAssetScriptTransaction
        SetAssetScriptTransaction
      • SetScriptTransaction
        SetScriptTransaction
      • SponsorFeeTransaction
        SponsorFeeTransaction
      • TransferTransaction
        TransferTransaction
      • UpdateAssetInfoTransaction
        UpdateAssetInfoTransaction
      Transaction Structures
    Structures
  • Built-in Variables
    Built-in Variables
  • Built-in Functions
    • Account Data Storage Functions
      Account Data Storage Functions
    • Blockchain Functions
      Blockchain Functions
    • Byte Array Functions
      Byte Array Functions
    • Converting Functions
      Converting Functions
    • Data Transaction Functions
      Data Transaction Functions
    • Decoding Functions
      Decoding Functions
    • Encoding Functions
      Encoding Functions
    • Exception Functions
      Exception Functions
    • Hashing Functions
      Hashing Functions
    • List Functions
      List Functions
    • Math Functions
      Math Functions
    • String Functions
      String Functions
    • Union Functions
      Union Functions
    • Verification Functions
      Verification Functions
    Built-in Functions
  • Operators
    Operators
  • Pattern Matching: match-case
    Pattern Matching: match-case
  • Interations with FOLD<N>
    Interations with FOLD<N>
  • Limitations
    • Complexity
      Complexity
    • Data Weight
      Data Weight
    Limitations
  • Version 5 (Stagenet)
    • dApp-to-dApp Invocation
      dApp-to-dApp Invocation
    • Continued Computations
      Continued Computations
    • Strict Variable
      Strict Variable
    • Callable Function
      Callable Function
    • Data types
      • Any
        Any
      • Boolean
        Boolean
      • ByteVector
        ByteVector
      • Int
        Int
      • String
        String
      • Unit
        Unit
      • List
        List
      • Tuple
        Tuple
      • Union
        Union
      Data types
    • Structures
      • Script Actions
        • BinaryEntry
          BinaryEntry
        • BooleanEntry
          BooleanEntry
        • Burn
          Burn
        • DeleteEntry
          DeleteEntry
        • IntegerEntry
          IntegerEntry
        • Issue
          Issue
        • Lease
          Lease
        • LeaseCancel
          LeaseCancel
        • Reissue
          Reissue
        • ScriptTransfer
          ScriptTransfer
        • SponsorFee
          SponsorFee
        • StringEntry
          StringEntry
        Script Actions
      • Common Structures
        • Address
          Address
        • Alias
          Alias
        • Asset
          Asset
        • AssetPair
          AssetPair
        • AttachedPayment
          AttachedPayment
        • BalanceDetails
          BalanceDetails
        • BlockInfo
          BlockInfo
        • Invocation
          Invocation
        • Order
          Order
        • Transfer
          Transfer
        Common Structures
      • Transaction Structures
        • BurnTransaction
          BurnTransaction
        • CreateAliasTransaction
          CreateAliasTransaction
        • DataTransaction
          DataTransaction
        • ExchangeTransaction
          ExchangeTransaction
        • GenesisTransaction
          GenesisTransaction
        • InvokeScriptTransaction
          InvokeScriptTransaction
        • IssueTransaction
          IssueTransaction
        • LeaseCancelTransaction
          LeaseCancelTransaction
        • LeaseTransaction
          LeaseTransaction
        • MassTransferTransaction
          MassTransferTransaction
        • ReissueTransaction
          ReissueTransaction
        • SetAssetScriptTransaction
          SetAssetScriptTransaction
        • SetScriptTransaction
          SetScriptTransaction
        • SponsorFeeTransaction
          SponsorFeeTransaction
        • TransferTransaction
          TransferTransaction
        • UpdateAssetInfoTransaction
          UpdateAssetInfoTransaction
        Transaction Structures
      Structures
    • Built-in Variables
      Built-in Variables
    • Built-in Functions
      • Account Data Storage Functions
        Account Data Storage Functions
      • Blockchain Functions
        Blockchain Functions
      • Byte Array Functions
        Byte Array Functions
      • Converting Functions
        Converting Functions
      • Data Transaction Functions
        Data Transaction Functions
      • Decoding Functions
        Decoding Functions
      • Encoding Functions
        Encoding Functions
      • Exception Functions
        Exception Functions
      • Hashing Functions
        Hashing Functions
      • dApp-to-dApp Invocation Function
        dApp-to-dApp Invocation Function
      • List Functions
        List Functions
      • Math Functions
        Math Functions
      • String Functions
        String Functions
      • Union Functions
        Union Functions
      • Verification Functions
        Verification Functions
      Built-in Functions
    • Operators
      Operators
    • Limitations
      Limitations
    Version 5 (Stagenet)
  • Ride Components
    Ride Components
  • Script performance tests
    Script performance tests
      • English
      • Русский
      On this page
        • cons
        • containsElement
        • getElement
        • indexOf
        • lastIndexOf
        • max
        • min
        • removeByIndex
        • size
      waves_logo Docs

          # List functions

          Name Description Complexity
          cons Inserts element to the beginning of the list 2 for Standard Library version 3
          1 for Standard Library version 4
          containsElement Check if the element is in the list 5
          getElement Gets the element from the list 2
          indexOf Returns the index of the first occurrence of the element in the list 5
          lastIndexOf Returns the index of the last occurrence of the element in the list 5
          max Returns the largest element in the list 3
          min Returns the smallest item in the list 3
          removeByIndex Removes an element from the list by index 7
          size Returns the size of the list 2

          T means any valid type.

          # cons

          Inserts element to the beginning of the list.

          cons(head:T, tail: List[T]): List[T]
          

          # Parameters

          Parameter Description
          head: T Element
          tail: List[T] List

          # Examples

          cons("Ride", ["on", "Waves"]) # Returns ["Ride", "on", "Waves"]
          cons(1, [2, 3, 4, 5]) # Returns [1, 2, 3, 4, 5]
          

          # containsElement

          Check if the element is in the list.

          ⚠️ The containsElement function is added in Standard library version 4.

          containsElement(list: List[T], element: T): Boolean
          

          # Parameters

          Parameter Description
          list: List[T] List
          element: T Element to search for

          # getElement

          Gets the element from the list by index.

          getElement(arr: List[T], pos: Int): T
          

          # Parameters

          Parameter Description
          arr: List[T] List
          pos: Int Index of the element

          # Examples

          getElement(["Ride", "on", "Waves"], 0)  # Returns "Ride"
          getElement([false, true], 1) # Returns true
          

          # indexOf

          Returns the index of the first occurrence of the element in the list or unit if the element is missing.

          ⚠️ The indexOf function is added in Standard library version 4.

          indexOf(list: List[T], element: T): Int|Unit
          

          # Parameters

          Parameter Description
          list: List[T] List
          element: T Element to locate

          # Example

          let stringList = ["a","b","a","c"]
          indexOf("a", stringList) # Returns 0
          

          # lastIndexOf

          Returns the index of the last occurrence of the element in the list or unit if the element is missing.

          ⚠️ The lastIndexOf function is added in Standard library version 4.

          lastIndexOf(list: List[T], element: T): Int|Unit
          

          # Parameters

          Parameter Description
          list: List[T] List
          element: T Element to locate

          # Example

          let stringList = ["a","b","a","c"]
          lastIndexOf("a", stringList) # Returns 2
          

          # max

          Returns the largest element in the list. If the list is empty, returns error.

          max(List[Int]): Int
          

          # Parameters

          Parameter Description
          list: List[T] List

          # min

          Returns the smallest element in the list. If the list is empty, returns error.

          min(List[Int]): Int
          

          # Parameters

          Parameter Description
          list: List[T] List

          # removeByIndex

          Removes an element from the list by index.

          ⚠️ The removeByIndex function is added in Standard library version 4.

          removeByIndex(list: List[T], index: Int): List[T]
          

          # Parameters

          Parameter Description
          list: List[T] List
          index: T Index of the element

          # Examlpes

          removeByIndex(["Waves", 42, true], 1) # Returns ["Waves", true]
          

          # size

          Returns the size of the list.

          size(arr: List[T]): Int
          

          # Parameters

          Parameter Description
          arr: List[T] List

          # Examples

          size(["Ride", "on", "Waves"]) # Returns 3
          
          Hashing Functions
          Math Functions
          Hashing Functions
          Math Functions