Hollywood forums

Posted: **Sun Mar 18, 2018 12:31 pm**

I wish this DRY code was possible with the Switch-Case statement:

Switch msg.id
   Case "listtree-draganddrop"	  	   		   	
   Case "listtree-sorthook"		  	   		   			  	   		   		  	   		   		
   Case "pageview-pagemode"		  	   		   			  	   		   		
   Case "group-orientation"
      layout:SaveUserData( MidStr(msg.id,0, FindStr(msg.id,"-")))
EndSwitch

Instead of the verbose:

Code: Select all

Switch msg.id
   Case "listtree-draganddrop"
      Layout:SaveUserData("listtree")
		  	   		   	
   Case "listtree-sorthook"
      Layout:SaveUserData("listtree")
		  	   		   			  	   		   		  	   		   		
   Case "pageview-pagemode"
      Layout:SaveUserData("pageview")
		  	   		   			  	   		   		
   Case "group-orientation"
      layout:SaveUserData("group")
EndSwitch

Posted: **Sun Mar 18, 2018 1:10 pm**

You have to use the new FallThrough()

Posted: **Sun Mar 18, 2018 1:37 pm**

The new FallThrough() statement enables fall through it doesn't exhibit the same behaviour I am discussing. I am looking for "OR' logic.

msg.id would not contain a matching expression, just the last one it finds.

Code: Select all

      layout:SaveUserData( MidStr(msg.id,0, FindStr(msg.id,"-")))

Posted: **Sun Mar 18, 2018 2:09 pm**

Why wouldn't FallThrough work, like this?

Code: Select all

Switch msg.id
   Case "listtree-draganddrop"
      FallThrough                 
   Case "listtree-sorthook"
      FallThrough                                                                              
   Case "pageview-pagemode"                                                       
      FallThrough
   Case "group-orientation"
      layout:SaveUserData( MidStr(msg.id,0, FindStr(msg.id,"-")))
EndSwitch

Posted: **Sun Mar 18, 2018 2:16 pm**

@JPV, the contains of the msg object will contain the properties of the final expression.

Code: Select all

   layout:SaveUserData( MidStr(msg.id,0, FindStr(msg.id,"-")))

Posted: **Sun Mar 18, 2018 2:21 pm**

djrikki wrote:@JPV, the contains of the msg object will contain the properties of the final expression.

Really? I'm pretty sure it doesn't. Why would it change there in the middle of the Switch?

Posted: **Sun Mar 18, 2018 2:36 pm**

I will have to give it a try for real, but Fallthrough by it's name suggests inheritance is lost.

Posted: **Sun Mar 18, 2018 2:40 pm**

Code: Select all

Function p_Test(id)
	Switch id
		Case 1:
			FallThrough
		Case 2:
			FallThrough
		Case 3:
			FallThrough
		Case 4:
			DebugPrint("id = "..id)
	EndSwitch
EndFunction

p_Test(1)
p_Test(3)
p_Test(4)

Gives:
id = 1
id = 3
id = 4

Posted: **Sun Mar 18, 2018 3:06 pm**

@JPV @bitRocky it appears I misunderstood the Fallthrough statement it certainly does what I want it to.

Thank you.

Hollywood forums

Switch...Case - multiple expressions

Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions

Re: Switch...Case - multiple expressions