Usage of CHOOSE keyword

[Michael Clease]

[code=thinbasic]
' Usage of the Choose Instruction example
'
' Displays an indexed value
'
' Written by Abraxas

Dim Index as LONG value 3
DIM RetNumber as LONG

RetNumber = Choose (Index, 1,2,3)

msgbox 0,RetNumber
[/code]

[GSAC3]

Another CHOOSE example ---

'
' Usage of the Choose Instruction example
'
' Displays an indexed value
'
USES "MATH"

DIM RetNumber as DOUBLE
DIM Index as LONG

For Index = 1 TO 3
RetNumber = Choose (Index, Fun1, Fun2, Fun3)
msgbox 0,RetNumber
Next

Function Fun1()
Function = PI
End Function

Function Fun2()
Function = PI*2
End Function

Function Fun3()
Function = PI*3
End Function

[marcuslee]

Another CHOOSE example ---
[code=thinbasic]
'
' Usage of the Choose Instruction example
'
' Displays an indexed value
'
USES "MATH"

DIM RetNumber as DOUBLE
DIM Index as LONG

For Index = 1 TO 3
RetNumber = Choose (Index, Fun1, Fun2, Fun3)
msgbox 0,RetNumber
Next

Function Fun1()
Function = PI
End Function

Function Fun2()
Function = PI*2
End Function

Function Fun3()
Function = PI*3
End Function
[/code]

That is an interesting. Just for conversation sake, are there any other ways to call functions in a similar loop fashion without using CHOOSE?

Mark

[ErosOlmi]

CHOOSE just evaluate numeric expression so you can specify whatever valid numeric expression and it will be valid.

Regarding other way of calling functions, have a look at CALL statement. It can be used to call function whose name is composed at runtime as a string expression. Very nice to execute function name dynamically. Example in http://community.thinbasic.com/index.php?topic=358.0
But better to open a new thread on this