Function Statement

ΠžΠΏΡ€Π΅Π΄Π΅Π»ΡΠ΅Ρ‚ ΠΏΠΎΠ΄ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΡƒ, которая ΠΌΠΎΠΆΠ΅Ρ‚ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒΡΡ ΠΊΠ°ΠΊ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΈΠ΅ для опрСдСлСния Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌΠΎΠ³ΠΎ Ρ‚ΠΈΠΏΠ°.

note

Sub or Function statements are similar methods, without distinction. They receive parameters by reference allowing them to be modified. LibreOffice Basic compiler accepts their respective syntax to be used interchangeably.


Syntax:

Function Statement diagram


  [Private | Public] Function Name[char] (argument1 [As Type][, argument2[char][,...]]) [As typename]
          statements
      [Exit Function]
          statements
  End Function

Parameters:

scope: Function default scope is Public. A Private scope denotes a module internal routine, not intended to be used from other modules.

name: Name of the subroutine to contain the value returned by the function.

arguments: Parameters to be passed to the subroutine.

argument fragment

argument fragment


      {[Optional [ByRef|ByVal]]|ParamArray} argument {{As typename|char}[ = expression]|[()]As Variant}
    
Parameters

Optional: The argument is not mandatory.

ByRef: The argument is passed by reference. ByRef is the default.

ByVal: The argument is passed by value. Its value can be modified by the called routine.

char: Type declaration character.

typename: Primitive data type name. Library or module defined types can also be specified.

= expression: Specify a default value for the argument, matching its declared type. Optional is necessary for each argument specifying a default value.

ParamArray: Use ParamArray when the number of parameters is undetermined. A typical scenario is that of a Calc user-defined function. Using ParamArray should be limited to the last argument of a routine.

tip

UsingParamArray or = expression require Option Compatible to be placed before the executable program code in a module.


warning

When using Option VBASupport 1, Optional arguments with no default value (= expression) are initialized according to their data type, except if Variant.


typename fragment

primitive data types fragment


      {Boolean|Byte|Currency|Date|Double|Integer|Long|Object|Single|String|Variant}
    
char fragment

type declaration characters


      { % | & | ! | # | $ | @ }
    

Examples:


Sub ExampleExit
Dim sReturn As String
Dim sListArray(10) As String
Dim siStep As Single
    For siStep = 0 to 10 REM Π—Π°ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠ΅ массива ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½Ρ‹ΠΌΠΈ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ
        sListArray(siStep) = chr$(siStep + 65)
        MsgBox sListArray(siStep)
    Next siStep
    sReturn = LinSearch(sListArray(), "B")
    Print sReturn
End Sub
 
Function LinSearch( sList(), sItem As String ) As Integer
Dim iCount As Integer
REM Linsearch ΠΈΡ‰Π΅Ρ‚ TextArray:sList() для TextEntry:
REM Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌΠΎΠ΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ - индСкс записи ΠΈΠ»ΠΈ 0 (Null)
    For iCount=1 To Ubound( sList() )
        If sList( iCount ) = sItem Then
            Exit for REM sItem ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½Π°
        End If
    Next iCount
    If iCount = Ubound( sList() ) Then iCount = 0
    LinSearch = iCount
End Function