Forum Discussion

Neihls_298286's avatar
Neihls_298286
Icon for Nimbostratus rankNimbostratus
Oct 18, 2017

iRule expr arithmetic broken

This arithmetic expression isn't working for me:

 

set $sum [expr {$integer + 14}]

 

In debug logs, $integer is 31.

 

The irule just stops processing.

 

At one time, I got this tmm error, but not ever again:

 

invalid command name "expr{31" while executing "expr{$integer + 2}"

 

application delivery
iRules

1 Reply

Sort By
  • Neihls_298286's avatar
    Neihls_298286
    Icon for Nimbostratus rankNimbostratus
    Oct 18, 2017

    Never mind.

     

    It didn't work when the expression assigns the sum to the same variable as one of the operands.

     

    E.g. This doesn't work:

     

    set integer [expr{$integer + 14}]

     

    And this does work:

     

    set sum [expr{$integer + 14}]