The ! character

vigilant · Post by **vigilant** » Mon Sep 03, 2007 2:15 pm

What does it mean when you do {![command]}
And where can i read more about these?

rosc2112 · Post by **rosc2112** » Mon Sep 03, 2007 3:57 pm

Presumably it means someone is trying to exploit your bot by using tcl special chars in a command attempt..

r0t3n · Post by **r0t3n** » Mon Sep 03, 2007 4:18 pm

if you mean inside an if statement, ! means if it failed.

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if {[command]} { # [command] returned 1 } else { [command] returned 0 }

if {![command]} { # [command] returned 0 } else { [command returned 1 }

very rough example.

Alchera · Post by **Alchera** » Mon Sep 03, 2007 8:35 pm

vigilant wrote:What does it mean when you do {![command]}
And where can i read more about these?

Tcl Developer Site could be a good place to start.

Your example isn't complete as the logical NOT is used within a conditional statement.

Simply put (your example) means:

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if {NOT [command]} {
   then do something
}

vigilant · Post by **vigilant** » Mon Sep 03, 2007 11:04 pm

Thanks a lot

egghelp/eggheads community

The ! character

The ! character

Re: The ! character