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Member "FreeBASIC-1.09.0-win64/examples/manual/proguide/procptrs/alias.bas" (1 Jan 2022, 569 Bytes) of package /windows/misc/FreeBASIC-1.09.0-win64.zip:

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    1 '' examples/manual/proguide/procptrs/alias.bas
    2 ''
    3 '' NOTICE: This file is part of the FreeBASIC Compiler package and can't
    4 ''         be included in other distributions without authorization.
    5 ''
    6 '' See Also: https://www.freebasic.net/wiki/wikka.php?wakka=ProPgProcedurePointers
    7 '' --------
    8 
    9 '' .. Add and pFunc as before ..
   10 #include Once "pfunc.bi"
   11 
   12 Type operation As Function (As Integer, As Integer) As Integer
   13 
   14 Function DoOperation (a As Integer, b As Integer, op As operation) As Integer
   15     Return op(a, b)
   16 End Function
   17 
   18 Print "3 + 4 = " & DoOperation(3, 4, @Add)
   19