Forum Discussion
iRule optimization : store string evaluation as boolean
Is there any advantage to storing the result of a string comparison as a boolean ?
set query_params_exist ( [HTTP::query] ne "" )
if (query_params_exist == 1) {
}
... somewhere else deep in logic
if (query_params_exist == 1) {
}
`
Or perhaps this be shortened to :
`if (query_params_exist) {
}
2 Replies
IheartF5_45022Nacreous
My understanding is that there is no advantage to storing the result as a variable rather than executing
if {[HTTP::query] ne ""}multiple times.
- JRahm
Admin
you will shave cycles (small, but every bit helps) by using if { $variable } instead of if { $variable == 1 }, but there is no benefit to setting a variable to a value already cached in memory like HTTP::query unless you are performing additional operations against that value multiple times, then it makes sense to set the variable.
