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MiniRobotLanguage (MRL)
CAE. Command
Case Else
Intention
This command can be used together with:
• SCS.
• CAN.
• ESC.
• CAS.
to build multiple-choice constructs.
CAE always evaluates to TRUE if none of the previous constructs has evaluated TRUE.
See example below.
: §§TXT=Karl Kovse
SCS.§§TXT
CAS.Karl
PRT.This will come
CAS.Peter
PRT.This will not come
CAE.
PRT. This will not come
ESC.
MBX.Ready
ENR.
Syntax
CAE.
Parameter Explanation
This command does not need any parameters.
Speed in Ticks:
This command uses typically around 14 Ticks.
Example
'********************************************
' Demo for SCS., CAS., CAE., ESC. and CAN.
'********************************************
' SCS.-Test
'DBM.2
FOR.$$LOP|1|20
VAR.$$TXT=Peter$$LOP
VAR.$$NUM=500
PRT.TXT=$$TXT
SCS.$$TXT
CAS.Was first case.
PRT.First Case
' This one will come in the twentieth
CAS.{Rufus&OR:Peter2}
PRT.Was "Peter2..."
' You can jump out of the structure directly with GOTO.
' And you can nest unlimited many SCS.
SCS.$$NUM
CAN.(100*5)
PRT.You can nest it unlimited.
CAN. 499
' You can even intermix CAS. / CAN.
CAS. Intermixed
CAE.
PRT.THis will not come
ESC.
JMP. otu
CAS.Third
PRT.Was Third
CAS.{Peter&AND:3}
PRT.Was "Peter" and "3"
' If you need a perfect match ...
CAS.{&EXACT:Theo}
PRT.This one is Theo.
CAS.Fourth.
PRT.Was this one.
' CASE ELSE
CAE.
PRT.Was nothing of all.
' END SELECT
ESC.
:otu
NEX.
MBX.Ending
:enz
END.
Speed in Ticks:
This command uses typically around 15 Ticks.
Remarks
Please do not write code between the SCS. and the first following CAS./CAN.
While this code will actually be executed, you could get memory-leaks if you jump out of the construct from that place.
Limitations:
There are no relevant nesting limitations.
Here is a general hint:
Please always make formulas into (...) to make sure they will be calculated.
See also: