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CALL

CALL (p [, var1 [, …, varN])

Invoke a sub or func by address pointer p. Optional var1 to varN variables of every SmallBASIC data type can be passed to function or sub, the address pointer points to.

Example 1: CALL with a subroutine pointer

sub MyPrint(i)
  print i
end

a = @MyPrint
call a, "test"      ' when using CALL for subroutines,
                    ' please use CALL without brakets

Example 2: CALL with a function pointer

func Increment(i, b)
  return  i + b
end

x = 1
a = @Increment
y = call(a,x,2)     ' when using CALL for functions,
                    ' please use CALL with brakets
print y

Example 3: CALL with a subroutine pointer and BYREF:

sub Increment(byref i, b)
  i = i + b
end

x = 1
a = @Increment
call a,x,2
print x

Example 4: Passing function pointer to a function

func Increment(i)
  return i + 1
end

func Decrement(i)
  return i - 1
end

func MyFunc(f, i)
  return call(f,i)
end

a = @Increment
b = @Decrement
x = 2
x = MyFunc(a,x): print x
x = MyFunc(b,x): print x

Code samples using CALL

000 hello.bas 001 3 ways to print hello 5 times.bas 002 numeric variables.bas 003 conditional branching.bas 004 loops.bas 005 challenge.bas 006 arrays+.bas Balleta 2-11-15.bas bezier_pen.bas bopit.bas btn 21.bas checkers.bas chess.bas dogstar5.bas draw rectangle.bas fireworks.bas fizzle2.bas form demo.bas g2 Life.bas g3 Life.bas g4 Life.bas g5 Life.bas g6 Life.bas hangman v2.bas hangman.bas image demo.bas matrix_solve.bas memory match game.bas pirate.bas

Language

AND AS BAND BG BOR BYREF CALL CASE CATCH CONST DECLARE DEF DO ELIF ELSE ELSEIF END END TRY ENDIF EQV EXIT FALSE FI FOR FUNC GOSUB GOTO IF IFF IMP IN LABEL LET LIKE LOCAL LSHIFT MDL MOD NAND NEXT NOR NOT ON OR REM REPEAT RETURN RSHIFT SELECT STEP STOP SUB THEN THROW TO TRUE TRY UNTIL USE USG USING WEND WHILE XNOR XOR

This page was last edited on Tue, 19 Sep 2023 14:53:45 +0200 | Markdown processed with pandoc 3.1.12.1

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