Forum Discussion

Chad_Roberts_21's avatar
Chad_Roberts_21
Icon for Nimbostratus rankNimbostratus
Nov 28, 2006

Dash in a data group list name

I recently wrote a few rules which referenced new data group lists, and things bugged out on me. (That's what I get for slapping new iRules into production without full testing, confident in my understanding of iRule logic. D'oh!) After some frustration and head-smacking, I realized that the log entries' "no such variable" references only mentioned the variable names up to the dash.

 

 

Why, then, am I even able to put a dash in the name at all?? Is this a bug, or is there a reason for it to be allowed which I am completely missing here.

 

 

Thanks,

 

 

dbw
application delivery
dev
devops
iRules

2 Replies

Sort By
  • Joe_Pruitt's avatar
    Joe_Pruitt
    Nov 28, 2006
    Dashes in variables is allowed, but you need to enclose them in curly braces. Underscores are ok but TCL interprets the dashes as a special character and terminates the variable at the dash. To bypass this surround the name with curly braces.

    $::{data-group-name}

    Give that a shot and see if it works for you.

    -Joe
  • Chad_Roberts_21's avatar
    Chad_Roberts_21
    Icon for Nimbostratus rankNimbostratus
    Nov 28, 2006
    Well that figures. heh Too late now, as I've rewritten them all in order to get everything working immediately, but thanks for explaining it to me.